diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index 312554e8e6..786ac3fa79 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -100,6 +100,14 @@ dependencies = [
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "app_dirs"
 version = "1.2.1"
@@ -651,6 +659,17 @@ name = "doc-comment"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "ed25519-dalek"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "clear_on_drop 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "curve25519-dalek 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ed25519-dalek"
 version = "1.0.0-pre.1"
@@ -698,7 +717,7 @@ dependencies = [
 
 [[package]]
 name = "environmental"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -816,7 +835,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "fork-tree"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -858,16 +877,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-channel-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-core-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -881,69 +900,57 @@ dependencies = [
 
 [[package]]
 name = "futures-executor-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-io-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "futures-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-channel-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-executor-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-io-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-executor-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-io-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-sink-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "futures-timer"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "futures-timer"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-util-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures-util-preview"
-version = "0.3.0-alpha.18"
+version = "0.3.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-channel-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-io-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-sink-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-channel-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-core-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-io-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-sink-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0-alpha.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1258,15 +1265,6 @@ dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "impl-serde"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "impl-serde"
 version = "0.2.1"
@@ -1277,7 +1275,7 @@ dependencies = [
 
 [[package]]
 name = "impl-trait-for-tuples"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2094,7 +2092,7 @@ dependencies = [
 
 [[package]]
 name = "merlin"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2337,6 +2335,11 @@ dependencies = [
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "once_cell"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "opaque-debug"
 version = "0.2.3"
@@ -2477,7 +2480,7 @@ dependencies = [
 
 [[package]]
 name = "parity-wasm"
-version = "0.40.2"
+version = "0.40.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -2701,7 +2704,7 @@ name = "polkadot-collator"
 version = "0.6.0"
 dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "polkadot-cli 0.6.0",
  "polkadot-network 0.6.0",
@@ -2907,7 +2910,7 @@ dependencies = [
  "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "exit-future 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3336,12 +3339,11 @@ dependencies = [
 
 [[package]]
 name = "rpassword"
-version = "3.0.2"
+version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3419,7 +3421,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "curve25519-dalek 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "merlin 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "merlin 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3697,7 +3699,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "sr-api-macros"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3709,9 +3711,9 @@ dependencies = [
 [[package]]
 name = "sr-io"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "environmental 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "environmental 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3726,9 +3728,9 @@ dependencies = [
 [[package]]
 name = "sr-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "integer-sqrt 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3745,7 +3747,7 @@ dependencies = [
 [[package]]
 name = "sr-staking-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -3755,7 +3757,7 @@ dependencies = [
 [[package]]
 name = "sr-std"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3763,9 +3765,9 @@ dependencies = [
 [[package]]
 name = "sr-version"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-serde 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -3775,7 +3777,7 @@ dependencies = [
 [[package]]
 name = "srml-authority-discovery"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3792,9 +3794,9 @@ dependencies = [
 [[package]]
 name = "srml-authorship"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-io 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -3808,7 +3810,7 @@ dependencies = [
 [[package]]
 name = "srml-babe"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3828,7 +3830,7 @@ dependencies = [
 [[package]]
 name = "srml-balances"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3843,7 +3845,7 @@ dependencies = [
 [[package]]
 name = "srml-collective"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3859,7 +3861,7 @@ dependencies = [
 [[package]]
 name = "srml-democracy"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3874,7 +3876,7 @@ dependencies = [
 [[package]]
 name = "srml-elections"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3890,7 +3892,7 @@ dependencies = [
 [[package]]
 name = "srml-executive"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3904,9 +3906,9 @@ dependencies = [
 [[package]]
 name = "srml-finality-tracker"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -3919,7 +3921,7 @@ dependencies = [
 [[package]]
 name = "srml-grandpa"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3937,7 +3939,7 @@ dependencies = [
 [[package]]
 name = "srml-im-online"
 version = "0.1.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3955,7 +3957,7 @@ dependencies = [
 [[package]]
 name = "srml-indices"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3972,7 +3974,7 @@ dependencies = [
 [[package]]
 name = "srml-membership"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3986,7 +3988,7 @@ dependencies = [
 [[package]]
 name = "srml-metadata"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3997,7 +3999,7 @@ dependencies = [
 [[package]]
 name = "srml-offences"
 version = "1.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4012,9 +4014,9 @@ dependencies = [
 [[package]]
 name = "srml-session"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4031,7 +4033,7 @@ dependencies = [
 [[package]]
 name = "srml-staking"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4051,7 +4053,7 @@ dependencies = [
 [[package]]
 name = "srml-staking-reward-curve"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4062,7 +4064,7 @@ dependencies = [
 [[package]]
 name = "srml-sudo"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4076,11 +4078,11 @@ dependencies = [
 [[package]]
 name = "srml-support"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "bitmask 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "once_cell 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "once_cell 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4096,7 +4098,7 @@ dependencies = [
 [[package]]
 name = "srml-support-procedural"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4108,7 +4110,7 @@ dependencies = [
 [[package]]
 name = "srml-support-procedural-tools"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4120,7 +4122,7 @@ dependencies = [
 [[package]]
 name = "srml-support-procedural-tools-derive"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4130,9 +4132,9 @@ dependencies = [
 [[package]]
 name = "srml-system"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "safe-mix 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4147,9 +4149,9 @@ dependencies = [
 [[package]]
 name = "srml-timestamp"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4162,7 +4164,7 @@ dependencies = [
 [[package]]
 name = "srml-treasury"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4248,7 +4250,7 @@ dependencies = [
 [[package]]
 name = "substrate-application-crypto"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4260,10 +4262,10 @@ dependencies = [
 [[package]]
 name = "substrate-authority-discovery"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4282,7 +4284,7 @@ dependencies = [
 [[package]]
 name = "substrate-authority-discovery-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4304,9 +4306,9 @@ dependencies = [
 [[package]]
 name = "substrate-chain-spec"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4319,7 +4321,7 @@ dependencies = [
 [[package]]
 name = "substrate-chain-spec-derive"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "proc-macro-crate 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4330,27 +4332,28 @@ dependencies = [
 [[package]]
 name = "substrate-cli"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "app_dirs 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "exit-future 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "names 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rpassword 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rpassword 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "structopt 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-keyring 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-network 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-panic-handler 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4365,12 +4368,12 @@ dependencies = [
 [[package]]
 name = "substrate-client"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d)",
@@ -4383,6 +4386,7 @@ dependencies = [
  "sr-version 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-executor 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-keyring 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4394,7 +4398,7 @@ dependencies = [
 [[package]]
 name = "substrate-client-db"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvdb 0.1.0 (git+https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d)",
@@ -4408,6 +4412,7 @@ dependencies = [
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-executor 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-state-db 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-state-machine 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4417,21 +4422,21 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-babe"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "fork-tree 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "merlin 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "merlin 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pdqselect 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "schnorrkel 0.8.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-io 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4444,6 +4449,7 @@ dependencies = [
  "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-slots 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-uncles 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-keystore 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4453,7 +4459,7 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-babe-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "schnorrkel 0.8.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4467,11 +4473,11 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-common"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4486,10 +4492,10 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-slots"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4504,7 +4510,7 @@ dependencies = [
 [[package]]
 name = "substrate-consensus-uncles"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4518,14 +4524,14 @@ dependencies = [
 [[package]]
 name = "substrate-executor"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsecp256k1 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-wasm 0.40.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-wasm 0.40.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-io 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "sr-version 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4541,22 +4547,23 @@ dependencies = [
 [[package]]
 name = "substrate-finality-grandpa"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "finality-grandpa 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fork-tree 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "srml-finality-tracker 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-finality-grandpa-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-keystore 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-network 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4569,7 +4576,7 @@ dependencies = [
 [[package]]
 name = "substrate-finality-grandpa-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4579,10 +4586,20 @@ dependencies = [
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
 ]
 
+[[package]]
+name = "substrate-header-metadata"
+version = "2.0.0"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
+dependencies = [
+ "lru-cache 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+]
+
 [[package]]
 name = "substrate-inherents"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4593,7 +4610,7 @@ dependencies = [
 [[package]]
 name = "substrate-keyring"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4605,12 +4622,12 @@ dependencies = [
 [[package]]
 name = "substrate-keystore"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "substrate-application-crypto 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4620,18 +4637,18 @@ dependencies = [
 [[package]]
 name = "substrate-network"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "fork-tree 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked_hash_set 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4639,7 +4656,7 @@ dependencies = [
  "lru-cache 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4650,24 +4667,25 @@ dependencies = [
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-babe-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-consensus-common 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
+ "substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-peerset 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "unsigned-varint 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "substrate-offchain"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.12.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper-tls 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4686,7 +4704,7 @@ dependencies = [
 [[package]]
 name = "substrate-offchain-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "substrate-client 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4695,7 +4713,7 @@ dependencies = [
 [[package]]
 name = "substrate-panic-handler"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "backtrace 0.3.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4704,9 +4722,9 @@ dependencies = [
 [[package]]
 name = "substrate-peerset"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4717,7 +4735,7 @@ dependencies = [
 [[package]]
 name = "substrate-phragmen"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4726,23 +4744,23 @@ dependencies = [
 [[package]]
 name = "substrate-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "base58 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
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  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "ed25519-dalek 1.0.0-pre.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ed25519-dalek 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash256-std-hasher 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "impl-serde 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "primitive-types 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "schnorrkel 0.8.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4753,15 +4771,15 @@ dependencies = [
  "tiny-bip39 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "twox-hash 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmi 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zeroize 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "substrate-rpc"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
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  "jsonrpc-pubsub 13.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4784,10 +4802,10 @@ dependencies = [
 [[package]]
 name = "substrate-rpc-api"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 13.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core-client 13.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-derive 13.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4806,7 +4824,7 @@ dependencies = [
 [[package]]
 name = "substrate-rpc-primitives"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "substrate-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4815,7 +4833,7 @@ dependencies = [
 [[package]]
 name = "substrate-rpc-servers"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "jsonrpc-core 13.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-http-server 13.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4830,7 +4848,7 @@ dependencies = [
 [[package]]
 name = "substrate-serializer"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4839,12 +4857,12 @@ dependencies = [
 [[package]]
 name = "substrate-service"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "exit-future 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4881,7 +4899,7 @@ dependencies = [
 [[package]]
 name = "substrate-session"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "sr-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
  "sr-std 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)",
@@ -4892,7 +4910,7 @@ dependencies = [
 [[package]]
 name = "substrate-state-db"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
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  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4903,7 +4921,7 @@ dependencies = [
 [[package]]
 name = "substrate-state-machine"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
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  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4921,16 +4939,16 @@ dependencies = [
 [[package]]
 name = "substrate-telemetry"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libp2p 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "slog-async 2.3.0 (git+https://github.com/paritytech/slog-async)",
@@ -4943,10 +4961,10 @@ dependencies = [
 [[package]]
 name = "substrate-transaction-graph"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
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  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4957,10 +4975,10 @@ dependencies = [
 [[package]]
 name = "substrate-transaction-pool"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
- "derive_more 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive_more 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
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  "parking_lot 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4973,7 +4991,7 @@ dependencies = [
 [[package]]
 name = "substrate-trie"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
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  "memory-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4992,7 +5010,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "substrate-wasm-interface"
 version = "2.0.0"
-source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#db417ffda057dc314c0fb4e1ef1b197e07b31fa1"
+source = "git+https://github.com/paritytech/substrate?branch=polkadot-master#aba25769f23dc1bbfeb18b4326cb67234076bd7c"
 dependencies = [
  "wasmi 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5639,7 +5657,7 @@ dependencies = [
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  "num-rational 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-wasm 0.40.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-wasm 0.40.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmi-validation 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -5656,7 +5674,7 @@ name = "wasmi-validation"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "parity-wasm 0.40.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-wasm 0.40.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5817,6 +5835,11 @@ dependencies = [
  "zeroize_derive 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "zeroize"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "zeroize_derive"
 version = "0.9.3"
@@ -5837,6 +5860,7 @@ dependencies = [
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 "checksum aio-limited 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7f10b352bc3fc08ae24dc5d2d3ddcac153678533986122dc283d747b12071000"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+"checksum ansi_term 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
 "checksum app_dirs 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e73a24bad9bd6a94d6395382a6c69fe071708ae4409f763c5475e14ee896313d"
 "checksum arc-swap 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)" = "bc4662175ead9cd84451d5c35070517777949a2ed84551764129cedb88384841"
 "checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
@@ -5905,12 +5929,13 @@ dependencies = [
 "checksum dlmalloc 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f283302e035e61c23f2b86b3093e8c6273a4c3125742d6087e96ade001ca5e63"
 "checksum dns-parser 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c4d33be9473d06f75f58220f71f7a9317aca647dc061dbd3c361b0bef505fbea"
 "checksum doc-comment 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "923dea538cea0aa3025e8685b20d6ee21ef99c4f77e954a30febbaac5ec73a97"
+"checksum ed25519-dalek 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d07e8b8a8386c3b89a7a4b329fdfa4cb545de2545e9e2ebbc3dd3929253e426"
 "checksum ed25519-dalek 1.0.0-pre.1 (registry+https://github.com/rust-lang/crates.io-index)" = "81956bcf7ef761fb4e1d88de3fa181358a0d26cbcb9755b587a08f9119824b86"
 "checksum either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
 "checksum elastic-array 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "073be79b6538296faf81c631872676600616073817dd9a440c477ad09b408983"
 "checksum enum_primitive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "be4551092f4d519593039259a9ed8daedf0da12e5109c5280338073eaeb81180"
 "checksum env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "aafcde04e90a5226a6443b7aabdb016ba2f8307c847d524724bd9b346dd1a2d3"
-"checksum environmental 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5c7464757b80de8930c91c9afe77ddce501826bf9d134a87db2c67d9dc177e2c"
+"checksum environmental 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "34f8467a0284de039e6bd0e25c14519538462ba5beb548bb1f03e645097837a8"
 "checksum erased-serde 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "3beee4bc16478a1b26f2e80ad819a52d24745e292f521a63c16eea5f74b7eb60"
 "checksum exit-future 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d8013f441e38e31c670e7f34ec8f1d5d3a2bd9d303c1ff83976ca886005e8f48"
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
@@ -5930,16 +5955,15 @@ dependencies = [
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 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)" = "1b980f2816d6ee8673b6517b52cb0e808a180efc92e5c19d02cdda79066703ef"
-"checksum futures-channel-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "f477fd0292c4a4ae77044454e7f2b413207942ad405f759bb0b4698b7ace5b12"
-"checksum futures-core-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "4a2f26f774b81b3847dcda0c81bd4b6313acfb4f69e5a0390c7cb12c058953e9"
+"checksum futures-channel-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "d5e5f4df964fa9c1c2f8bddeb5c3611631cacd93baf810fc8bb2fb4b495c263a"
+"checksum futures-core-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "b35b6263fb1ef523c3056565fa67b1d16f0a8604ff12b11b08c25f28a734c60a"
 "checksum futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
-"checksum futures-executor-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "80705612926df8a1bc05f0057e77460e29318801f988bf7d803a734cf54e7528"
-"checksum futures-io-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "ee7de0c1c9ed23f9457b0437fec7663ce64d9cc3c906597e714e529377b5ddd1"
-"checksum futures-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "efa8f90c4fb2328e381f8adfd4255b4a2b696f77d1c63a3dee6700b564c4e4b5"
-"checksum futures-sink-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "e9b65a2481863d1b78e094a07e9c0eed458cc7dc6e72b22b7138b8a67d924859"
-"checksum futures-timer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8f9eb554aa23143abc64ec4d0016f038caf53bb7cbc3d91490835c54edc96550"
+"checksum futures-executor-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "75236e88bd9fe88e5e8bfcd175b665d0528fe03ca4c5207fabc028c8f9d93e98"
+"checksum futures-io-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "f4914ae450db1921a56c91bde97a27846287d062087d4a652efc09bb3a01ebda"
+"checksum futures-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "3b1dce2a0267ada5c6ff75a8ba864b4e679a9e2aa44262af7a3b5516d530d76e"
+"checksum futures-sink-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "86f148ef6b69f75bb610d4f9a2336d4fc88c4b5b67129d1a340dd0fd362efeec"
 "checksum futures-timer 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "878f1d2fc31355fa02ed2372e741b0c17e58373341e6a122569b4623a14a7d33"
-"checksum futures-util-preview 0.3.0-alpha.18 (registry+https://github.com/rust-lang/crates.io-index)" = "7df53daff1e98cc024bf2720f3ceb0414d96fbb0a94f3cad3a5c3bf3be1d261c"
+"checksum futures-util-preview 0.3.0-alpha.19 (registry+https://github.com/rust-lang/crates.io-index)" = "5ce968633c17e5f97936bd2797b6e38fb56cf16a7422319f7ec2e30d3c470e8d"
 "checksum gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)" = "8f5f3913fa0bfe7ee1fd8248b6b9f42a5af4b9d65ec2dd2c3c26132b950ecfc2"
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fceb69994e330afed50c93524be68c42fa898c2d9fd4ee8da03bd7363acd26f2"
@@ -5972,9 +5996,8 @@ dependencies = [
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
 "checksum idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9"
 "checksum impl-codec 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3fa0086251524c50fd53b32e7b05eb6d79e2f97221eaf0c53c0ca9c3096f21d3"
-"checksum impl-serde 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5158079de9d4158e0ce1de3ae0bd7be03904efc40b3d7dd8b8c301cbf6b52b56"
 "checksum impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bbb1ea6188aca47a0eaeeb330d8a82f16cd500f30b897062d23922568727333a"
-"checksum impl-trait-for-tuples 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7b0df44cb13008e863c3d80788d5f4cb0f94d09b31bb0190a8ecc05151b2ac8a"
+"checksum impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6947b372790f8948f439bb6aaa6baabdf80be1a207a477ff072f83fb793e428f"
 "checksum indexmap 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a61202fbe46c4a951e9404a720a0180bcf3212c750d735cb5c4ba4dc551299f3"
 "checksum integer-sqrt 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ea155abb3ba6f382a75f1418988c05fe82959ed9ce727de427f9cfd425b0c903"
 "checksum interleaved-ordered 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "141340095b15ed7491bd3d4ced9d20cebfb826174b6bb03386381f62b01e3d77"
@@ -6044,7 +6067,7 @@ dependencies = [
 "checksum memory-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ef49315991403ba5fa225a70399df5e115f57b274cb0b1b4bcd6e734fa5bd783"
 "checksum memory_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "71d96e3f3c0b6325d8ccd83c33b28acb183edcb6c67938ba104ec546854b0882"
 "checksum memrange 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cc29ba65898edc4fdc252cb31cd3925f37c1a8ba25bb46eec883569984976530"
-"checksum merlin 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "66448a173ad394ef5ebf734efa724f3644dcffda083b1e89979da4461ddac079"
+"checksum merlin 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "de2d16d3b15fec5943d1144f861f61f279d165fdd60998ca262913b9bf1c8adb"
 "checksum miniz-sys 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "1e9e3ae51cea1576ceba0dde3d484d30e6e5b86dee0b2d412fe3a16a15c98202"
 "checksum miniz_oxide 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7108aff85b876d06f22503dcce091e29f76733b2bfdd91eebce81f5e68203a10"
 "checksum mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)" = "83f51996a3ed004ef184e16818edc51fadffe8e7ca68be67f9dee67d84d0ff23"
@@ -6069,6 +6092,7 @@ dependencies = [
 "checksum num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bcef43580c035376c0705c42792c294b66974abbfd2789b511784023f71f3273"
 "checksum ole32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d2c49021782e5233cd243168edfa8037574afed4eba4bbaf538b3d8d1789d8c"
 "checksum once_cell 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "532c29a261168a45ce28948f9537ddd7a5dd272cc513b3017b1e82a88f962c37"
+"checksum once_cell 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d584f08c2d717d5c23a6414fc2822b71c651560713e54fa7eace675f758a355e"
 "checksum opaque-debug 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
 "checksum openssl 0.10.24 (registry+https://github.com/rust-lang/crates.io-index)" = "8152bb5a9b5b721538462336e3bef9a539f892715e5037fda0f984577311af15"
 "checksum openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
@@ -6084,7 +6108,7 @@ dependencies = [
 "checksum parity-send-wrapper 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aa9777aa91b8ad9dd5aaa04a9b6bcb02c7f1deb952fca5a66034d5e63afc5c6f"
 "checksum parity-util-mem 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2005637ccf93dbb60c85081ccaaf3f945f573da48dcc79f27f9646caa3ec1dc"
 "checksum parity-wasm 0.31.3 (registry+https://github.com/rust-lang/crates.io-index)" = "511379a8194230c2395d2f5fa627a5a7e108a9f976656ce723ae68fca4097bfc"
-"checksum parity-wasm 0.40.2 (registry+https://github.com/rust-lang/crates.io-index)" = "49d1e33551976be5345d2ecbfe995830719746c7f0902f0880a13d40e215f851"
+"checksum parity-wasm 0.40.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1e39faaa292a687ea15120b1ac31899b13586446521df6c149e46f1584671e0f"
 "checksum parking_lot 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d4d05f1349491390b1730afba60bb20d55761bef489a954546b58b4b34e1e2ac"
 "checksum parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f0802bff09003b291ba756dc7e79313e51cc31667e94afbe847def490424cde5"
 "checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
@@ -6149,7 +6173,7 @@ dependencies = [
 "checksum ring 0.14.6 (registry+https://github.com/rust-lang/crates.io-index)" = "426bc186e3e95cac1e4a4be125a4aca7e84c2d616ffc02244eef36e2a60a093c"
 "checksum rocksdb 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "39be726e556e6f21d54d21cdf1be9f6df30c0411a5856c1abf3f4bb12498f2ed"
 "checksum rocksdb 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f1651697fefd273bfb4fd69466cc2a9d20de557a0213b97233b22b5e95924b5e"
-"checksum rpassword 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c34fa7bcae7fca3c8471e8417088bbc3ad9af8066b0ecf4f3c0d98a0d772716e"
+"checksum rpassword 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f072d931f11a96546efd97642e1e75e807345aced86b947f9239102f262d0fcd"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "403bb3a286107a04825a5f82e1270acc1e14028d3d554d7a1e08914549575ab8"
 "checksum rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)" = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
@@ -6248,6 +6272,7 @@ dependencies = [
 "checksum substrate-executor 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
 "checksum substrate-finality-grandpa 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
 "checksum substrate-finality-grandpa-primitives 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
+"checksum substrate-header-metadata 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
 "checksum substrate-inherents 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
 "checksum substrate-keyring 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
 "checksum substrate-keystore 2.0.0 (git+https://github.com/paritytech/substrate?branch=polkadot-master)" = "<none>"
@@ -6360,5 +6385,6 @@ dependencies = [
 "checksum x25519-dalek 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7ee1585dc1484373cbc1cee7aafda26634665cf449436fd6e24bfd1fad230538"
 "checksum xdg 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d089681aa106a86fade1b0128fb5daf07d5867a509ab036d99988dec80429a57"
 "checksum yamux 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "01bd67889938c48f0049fc60a77341039e6c3eaf16cb7693e6ead7c0ba701295"
+"checksum zeroize 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4090487fa66630f7b166fba2bbb525e247a5449f41c468cc1d98f8ae6ac03120"
 "checksum zeroize 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "45af6a010d13e4cf5b54c94ba5a2b2eba5596b9e46bf5875612d332a1f2b3f86"
 "checksum zeroize_derive 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "080616bd0e31f36095288bb0acdf1f78ef02c2fa15527d7e993f2a6c7591643e"
diff --git a/polkadot/runtime/src/lib.rs b/polkadot/runtime/src/lib.rs
index 854bb08356..73f114152b 100644
--- a/polkadot/runtime/src/lib.rs
+++ b/polkadot/runtime/src/lib.rs
@@ -99,7 +99,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("kusama"),
 	impl_name: create_runtime_str!("parity-kusama"),
 	authoring_version: 1,
-	spec_version: 1003,
+	spec_version: 1004,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 };
@@ -174,6 +174,9 @@ parameter_types! {
 impl babe::Trait for Runtime {
 	type EpochDuration = EpochDuration;
 	type ExpectedBlockTime = ExpectedBlockTime;
+
+	// session module is the trigger
+	type EpochChangeTrigger = babe::ExternalTrigger;
 }
 
 impl indices::Trait for Runtime {
diff --git a/polkadot/runtime/src/parachains.rs b/polkadot/runtime/src/parachains.rs
index 34a911b1b1..eaa67ce2c8 100644
--- a/polkadot/runtime/src/parachains.rs
+++ b/polkadot/runtime/src/parachains.rs
@@ -981,6 +981,9 @@ mod tests {
 	impl babe::Trait for Test {
 		type EpochDuration = EpochDuration;
 		type ExpectedBlockTime = ExpectedBlockTime;
+
+		// session module is the trigger
+		type EpochChangeTrigger = babe::ExternalTrigger;
 	}
 
 	parameter_types! {