diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index 0900244f16..1223b7b2ad 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -1171,7 +1171,7 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 [[package]]
 name = "fork-tree"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
 ]
@@ -1179,7 +1179,7 @@ dependencies = [
 [[package]]
 name = "frame-benchmarking"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -1196,7 +1196,7 @@ dependencies = [
 [[package]]
 name = "frame-benchmarking-cli"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "parity-scale-codec",
@@ -1214,7 +1214,7 @@ dependencies = [
 [[package]]
 name = "frame-executive"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -1229,7 +1229,7 @@ dependencies = [
 [[package]]
 name = "frame-metadata"
 version = "11.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "serde",
@@ -1240,7 +1240,7 @@ dependencies = [
 [[package]]
 name = "frame-support"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "bitmask",
  "frame-metadata",
@@ -1265,7 +1265,7 @@ dependencies = [
 [[package]]
 name = "frame-support-procedural"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support-procedural-tools",
  "proc-macro2 1.0.17",
@@ -1276,7 +1276,7 @@ dependencies = [
 [[package]]
 name = "frame-support-procedural-tools"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support-procedural-tools-derive",
  "proc-macro-crate",
@@ -1288,7 +1288,7 @@ dependencies = [
 [[package]]
 name = "frame-support-procedural-tools-derive"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "proc-macro2 1.0.17",
  "quote 1.0.6",
@@ -1298,7 +1298,7 @@ dependencies = [
 [[package]]
 name = "frame-system"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "impl-trait-for-tuples",
@@ -1314,7 +1314,7 @@ dependencies = [
 [[package]]
 name = "frame-system-benchmarking"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -1328,7 +1328,7 @@ dependencies = [
 [[package]]
 name = "frame-system-rpc-runtime-api"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -2221,7 +2221,7 @@ dependencies = [
 
 [[package]]
 name = "kusama-runtime"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "frame-benchmarking",
@@ -2246,6 +2246,7 @@ dependencies = [
  "pallet-im-online",
  "pallet-indices",
  "pallet-membership",
+ "pallet-multisig",
  "pallet-nicks",
  "pallet-offences",
  "pallet-offences-benchmarking",
@@ -3228,7 +3229,7 @@ dependencies = [
 [[package]]
 name = "pallet-authority-discovery"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3244,7 +3245,7 @@ dependencies = [
 [[package]]
 name = "pallet-authorship"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3259,7 +3260,7 @@ dependencies = [
 [[package]]
 name = "pallet-babe"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3281,7 +3282,7 @@ dependencies = [
 [[package]]
 name = "pallet-balances"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3295,7 +3296,7 @@ dependencies = [
 [[package]]
 name = "pallet-collective"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3311,7 +3312,7 @@ dependencies = [
 [[package]]
 name = "pallet-democracy"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3326,7 +3327,7 @@ dependencies = [
 [[package]]
 name = "pallet-elections-phragmen"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3341,7 +3342,7 @@ dependencies = [
 [[package]]
 name = "pallet-finality-tracker"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3357,7 +3358,7 @@ dependencies = [
 [[package]]
 name = "pallet-grandpa"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3377,7 +3378,7 @@ dependencies = [
 [[package]]
 name = "pallet-identity"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "enumflags2",
  "frame-benchmarking",
@@ -3393,7 +3394,7 @@ dependencies = [
 [[package]]
 name = "pallet-im-online"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3413,7 +3414,7 @@ dependencies = [
 [[package]]
 name = "pallet-indices"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3429,7 +3430,7 @@ dependencies = [
 [[package]]
 name = "pallet-membership"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3440,10 +3441,25 @@ dependencies = [
  "sp-std",
 ]
 
+[[package]]
+name = "pallet-multisig"
+version = "2.0.0-rc2"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
+dependencies = [
+ "frame-support",
+ "frame-system",
+ "parity-scale-codec",
+ "serde",
+ "sp-core",
+ "sp-io",
+ "sp-runtime",
+ "sp-std",
+]
+
 [[package]]
 name = "pallet-nicks"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3457,7 +3473,7 @@ dependencies = [
 [[package]]
 name = "pallet-offences"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3472,7 +3488,7 @@ dependencies = [
 [[package]]
 name = "pallet-offences-benchmarking"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3493,7 +3509,7 @@ dependencies = [
 [[package]]
 name = "pallet-proxy"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3508,7 +3524,7 @@ dependencies = [
 [[package]]
 name = "pallet-randomness-collective-flip"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3521,7 +3537,7 @@ dependencies = [
 [[package]]
 name = "pallet-recovery"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "enumflags2",
  "frame-support",
@@ -3536,7 +3552,7 @@ dependencies = [
 [[package]]
 name = "pallet-scheduler"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3551,7 +3567,7 @@ dependencies = [
 [[package]]
 name = "pallet-session"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3569,7 +3585,7 @@ dependencies = [
 [[package]]
 name = "pallet-session-benchmarking"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3583,7 +3599,7 @@ dependencies = [
 [[package]]
 name = "pallet-society"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3597,7 +3613,7 @@ dependencies = [
 [[package]]
 name = "pallet-staking"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3619,7 +3635,7 @@ dependencies = [
 [[package]]
 name = "pallet-staking-reward-curve"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2 1.0.17",
@@ -3630,7 +3646,7 @@ dependencies = [
 [[package]]
 name = "pallet-sudo"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3644,7 +3660,7 @@ dependencies = [
 [[package]]
 name = "pallet-timestamp"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3662,7 +3678,7 @@ dependencies = [
 [[package]]
 name = "pallet-transaction-payment"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "frame-system",
@@ -3676,7 +3692,7 @@ dependencies = [
 [[package]]
 name = "pallet-transaction-payment-rpc"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "jsonrpc-core",
  "jsonrpc-core-client",
@@ -3694,7 +3710,7 @@ dependencies = [
 [[package]]
 name = "pallet-transaction-payment-rpc-runtime-api"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-support",
  "parity-scale-codec",
@@ -3707,7 +3723,7 @@ dependencies = [
 [[package]]
 name = "pallet-treasury"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3722,7 +3738,7 @@ dependencies = [
 [[package]]
 name = "pallet-utility"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-benchmarking",
  "frame-support",
@@ -3738,7 +3754,7 @@ dependencies = [
 [[package]]
 name = "pallet-vesting"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "enumflags2",
  "frame-benchmarking",
@@ -4047,7 +4063,7 @@ checksum = "feb3b2b1033b8a60b4da6ee470325f887758c95d5320f52f9ce0df055a55940e"
 
 [[package]]
 name = "polkadot"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "assert_cmd",
  "futures 0.3.5",
@@ -4060,7 +4076,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-availability-store"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "derive_more 0.99.7",
  "exit-future",
@@ -4086,7 +4102,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-cli"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "frame-benchmarking-cli",
  "futures 0.3.5",
@@ -4110,7 +4126,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-collator"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 2.0.2",
@@ -4137,7 +4153,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-erasure-coding"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "derive_more 0.15.0",
  "parity-scale-codec",
@@ -4149,7 +4165,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-network"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "arrayvec 0.4.12",
  "bytes 0.5.4",
@@ -4177,7 +4193,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-network-test"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "futures 0.3.5",
  "log 0.4.8",
@@ -4220,7 +4236,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-parachain"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "derive_more 0.99.7",
  "log 0.4.8",
@@ -4239,7 +4255,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-primitives"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "frame-system",
@@ -4261,7 +4277,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-rpc"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "jsonrpc-core",
  "pallet-transaction-payment-rpc",
@@ -4286,7 +4302,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-runtime"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "frame-benchmarking",
@@ -4311,6 +4327,7 @@ dependencies = [
  "pallet-im-online",
  "pallet-indices",
  "pallet-membership",
+ "pallet-multisig",
  "pallet-nicks",
  "pallet-offences",
  "pallet-offences-benchmarking",
@@ -4359,7 +4376,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-runtime-common"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "frame-benchmarking",
@@ -4444,7 +4461,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-service"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "env_logger",
  "frame-benchmarking",
@@ -4503,7 +4520,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-statement-table"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "parity-scale-codec",
  "polkadot-primitives",
@@ -4512,7 +4529,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-test-runtime"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "frame-executive",
@@ -4589,7 +4606,7 @@ dependencies = [
 
 [[package]]
 name = "polkadot-validation"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "derive_more 0.14.1",
@@ -5357,7 +5374,7 @@ dependencies = [
 [[package]]
 name = "sc-authority-discovery"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "bytes 0.5.4",
  "derive_more 0.99.7",
@@ -5384,7 +5401,7 @@ dependencies = [
 [[package]]
 name = "sc-basic-authorship"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -5408,7 +5425,7 @@ dependencies = [
 [[package]]
 name = "sc-block-builder"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sc-client-api",
@@ -5424,7 +5441,7 @@ dependencies = [
 [[package]]
 name = "sc-chain-spec"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "impl-trait-for-tuples",
  "sc-chain-spec-derive",
@@ -5440,7 +5457,7 @@ dependencies = [
 [[package]]
 name = "sc-chain-spec-derive"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2 1.0.17",
@@ -5451,7 +5468,7 @@ dependencies = [
 [[package]]
 name = "sc-cli"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "ansi_term 0.12.1",
  "atty",
@@ -5492,7 +5509,7 @@ dependencies = [
 [[package]]
 name = "sc-client-api"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "fnv",
@@ -5528,7 +5545,7 @@ dependencies = [
 [[package]]
 name = "sc-client-db"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "blake2-rfc",
  "hash-db",
@@ -5557,7 +5574,7 @@ dependencies = [
 [[package]]
 name = "sc-consensus"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "sc-client-api",
  "sp-blockchain",
@@ -5568,7 +5585,7 @@ dependencies = [
 [[package]]
 name = "sc-consensus-babe"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "fork-tree",
@@ -5610,7 +5627,7 @@ dependencies = [
 [[package]]
 name = "sc-consensus-babe-rpc"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "futures 0.3.5",
@@ -5633,7 +5650,7 @@ dependencies = [
 [[package]]
 name = "sc-consensus-epochs"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "fork-tree",
  "parity-scale-codec",
@@ -5646,7 +5663,7 @@ dependencies = [
 [[package]]
 name = "sc-consensus-slots"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -5668,7 +5685,7 @@ dependencies = [
 [[package]]
 name = "sc-consensus-uncles"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "log 0.4.8",
  "sc-client-api",
@@ -5682,7 +5699,7 @@ dependencies = [
 [[package]]
 name = "sc-executor"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "lazy_static",
@@ -5710,7 +5727,7 @@ dependencies = [
 [[package]]
 name = "sc-executor-common"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "log 0.4.8",
@@ -5727,7 +5744,7 @@ dependencies = [
 [[package]]
 name = "sc-executor-wasmi"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "log 0.4.8",
  "parity-scale-codec",
@@ -5742,7 +5759,7 @@ dependencies = [
 [[package]]
 name = "sc-executor-wasmtime"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "cranelift-codegen",
  "cranelift-wasm",
@@ -5763,7 +5780,7 @@ dependencies = [
 [[package]]
 name = "sc-finality-grandpa"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "assert_matches",
  "derive_more 0.99.7",
@@ -5800,7 +5817,7 @@ dependencies = [
 [[package]]
 name = "sc-finality-grandpa-rpc"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "finality-grandpa",
@@ -5817,7 +5834,7 @@ dependencies = [
 [[package]]
 name = "sc-informant"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "ansi_term 0.12.1",
  "futures 0.3.5",
@@ -5834,7 +5851,7 @@ dependencies = [
 [[package]]
 name = "sc-keystore"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "hex",
@@ -5849,7 +5866,7 @@ dependencies = [
 [[package]]
 name = "sc-network"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "bitflags",
  "bs58",
@@ -5901,7 +5918,7 @@ dependencies = [
 [[package]]
 name = "sc-network-gossip"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "futures-timer 3.0.2",
@@ -5916,7 +5933,7 @@ dependencies = [
 [[package]]
 name = "sc-network-test"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "env_logger",
  "futures 0.3.5",
@@ -5943,7 +5960,7 @@ dependencies = [
 [[package]]
 name = "sc-offchain"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "bytes 0.5.4",
  "fnv",
@@ -5970,7 +5987,7 @@ dependencies = [
 [[package]]
 name = "sc-peerset"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "libp2p",
@@ -5983,7 +6000,7 @@ dependencies = [
 [[package]]
 name = "sc-proposer-metrics"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "log 0.4.8",
  "substrate-prometheus-endpoint",
@@ -5992,7 +6009,7 @@ dependencies = [
 [[package]]
 name = "sc-rpc"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -6024,7 +6041,7 @@ dependencies = [
 [[package]]
 name = "sc-rpc-api"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "futures 0.3.5",
@@ -6048,7 +6065,7 @@ dependencies = [
 [[package]]
 name = "sc-rpc-server"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "jsonrpc-core",
  "jsonrpc-http-server",
@@ -6063,7 +6080,7 @@ dependencies = [
 [[package]]
 name = "sc-service"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "exit-future",
@@ -6121,7 +6138,7 @@ dependencies = [
 [[package]]
 name = "sc-state-db"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "log 0.4.8",
  "parity-scale-codec",
@@ -6135,7 +6152,7 @@ dependencies = [
 [[package]]
 name = "sc-telemetry"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "bytes 0.5.4",
  "futures 0.3.5",
@@ -6157,7 +6174,7 @@ dependencies = [
 [[package]]
 name = "sc-tracing"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "erased-serde",
  "log 0.4.8",
@@ -6172,7 +6189,7 @@ dependencies = [
 [[package]]
 name = "sc-transaction-graph"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "futures 0.3.5",
@@ -6192,7 +6209,7 @@ dependencies = [
 [[package]]
 name = "sc-transaction-pool"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "futures 0.3.5",
@@ -6579,7 +6596,7 @@ dependencies = [
 [[package]]
 name = "sp-allocator"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "log 0.4.8",
@@ -6591,7 +6608,7 @@ dependencies = [
 [[package]]
 name = "sp-api"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "hash-db",
  "parity-scale-codec",
@@ -6606,7 +6623,7 @@ dependencies = [
 [[package]]
 name = "sp-api-proc-macro"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "blake2-rfc",
  "proc-macro-crate",
@@ -6618,7 +6635,7 @@ dependencies = [
 [[package]]
 name = "sp-application-crypto"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "serde",
@@ -6630,7 +6647,7 @@ dependencies = [
 [[package]]
 name = "sp-arithmetic"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "integer-sqrt",
  "num-traits 0.2.11",
@@ -6643,7 +6660,7 @@ dependencies = [
 [[package]]
 name = "sp-authority-discovery"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6655,7 +6672,7 @@ dependencies = [
 [[package]]
 name = "sp-authorship"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-inherents",
@@ -6666,7 +6683,7 @@ dependencies = [
 [[package]]
 name = "sp-block-builder"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6678,7 +6695,7 @@ dependencies = [
 [[package]]
 name = "sp-blockchain"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "log 0.4.8",
@@ -6694,7 +6711,7 @@ dependencies = [
 [[package]]
 name = "sp-chain-spec"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "serde",
  "serde_json",
@@ -6703,7 +6720,7 @@ dependencies = [
 [[package]]
 name = "sp-consensus"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "futures 0.3.5",
@@ -6726,7 +6743,7 @@ dependencies = [
 [[package]]
 name = "sp-consensus-aura"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -6740,7 +6757,7 @@ dependencies = [
 [[package]]
 name = "sp-consensus-babe"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "merlin",
  "parity-scale-codec",
@@ -6757,7 +6774,7 @@ dependencies = [
 [[package]]
 name = "sp-consensus-vrf"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "schnorrkel",
@@ -6769,7 +6786,7 @@ dependencies = [
 [[package]]
 name = "sp-core"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "base58",
  "blake2-rfc",
@@ -6811,7 +6828,7 @@ dependencies = [
 [[package]]
 name = "sp-database"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "kvdb",
  "parking_lot 0.10.2",
@@ -6820,7 +6837,7 @@ dependencies = [
 [[package]]
 name = "sp-debug-derive"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "proc-macro2 1.0.17",
  "quote 1.0.6",
@@ -6830,7 +6847,7 @@ dependencies = [
 [[package]]
 name = "sp-externalities"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "environmental",
  "parity-scale-codec",
@@ -6841,7 +6858,7 @@ dependencies = [
 [[package]]
 name = "sp-finality-grandpa"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "finality-grandpa",
  "log 0.4.8",
@@ -6857,7 +6874,7 @@ dependencies = [
 [[package]]
 name = "sp-finality-tracker"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-inherents",
@@ -6867,7 +6884,7 @@ dependencies = [
 [[package]]
 name = "sp-inherents"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "parity-scale-codec",
@@ -6879,7 +6896,7 @@ dependencies = [
 [[package]]
 name = "sp-io"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -6899,7 +6916,7 @@ dependencies = [
 [[package]]
 name = "sp-keyring"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "lazy_static",
  "sp-core",
@@ -6910,7 +6927,7 @@ dependencies = [
 [[package]]
 name = "sp-npos-elections"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "serde",
@@ -6922,7 +6939,7 @@ dependencies = [
 [[package]]
 name = "sp-npos-elections-compact"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2 1.0.17",
@@ -6933,7 +6950,7 @@ dependencies = [
 [[package]]
 name = "sp-offchain"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "sp-api",
  "sp-core",
@@ -6943,7 +6960,7 @@ dependencies = [
 [[package]]
 name = "sp-panic-handler"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "backtrace",
  "log 0.4.8",
@@ -6952,7 +6969,7 @@ dependencies = [
 [[package]]
 name = "sp-rpc"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "serde",
  "sp-core",
@@ -6961,7 +6978,7 @@ dependencies = [
 [[package]]
 name = "sp-runtime"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "hash256-std-hasher",
  "impl-trait-for-tuples",
@@ -6982,7 +6999,7 @@ dependencies = [
 [[package]]
 name = "sp-runtime-interface"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "primitive-types",
@@ -6997,7 +7014,7 @@ dependencies = [
 [[package]]
 name = "sp-runtime-interface-proc-macro"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "Inflector",
  "proc-macro-crate",
@@ -7009,7 +7026,7 @@ dependencies = [
 [[package]]
 name = "sp-serializer"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "serde",
  "serde_json",
@@ -7018,7 +7035,7 @@ dependencies = [
 [[package]]
 name = "sp-session"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-api",
@@ -7031,7 +7048,7 @@ dependencies = [
 [[package]]
 name = "sp-staking"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "parity-scale-codec",
  "sp-runtime",
@@ -7041,7 +7058,7 @@ dependencies = [
 [[package]]
 name = "sp-state-machine"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "hash-db",
  "log 0.4.8",
@@ -7060,12 +7077,12 @@ dependencies = [
 [[package]]
 name = "sp-std"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 
 [[package]]
 name = "sp-storage"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "impl-serde 0.2.3",
  "ref-cast",
@@ -7077,7 +7094,7 @@ dependencies = [
 [[package]]
 name = "sp-timestamp"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "impl-trait-for-tuples",
  "parity-scale-codec",
@@ -7091,7 +7108,7 @@ dependencies = [
 [[package]]
 name = "sp-tracing"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "tracing",
 ]
@@ -7099,7 +7116,7 @@ dependencies = [
 [[package]]
 name = "sp-transaction-pool"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "derive_more 0.99.7",
  "futures 0.3.5",
@@ -7115,7 +7132,7 @@ dependencies = [
 [[package]]
 name = "sp-trie"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "hash-db",
  "memory-db",
@@ -7129,7 +7146,7 @@ dependencies = [
 [[package]]
 name = "sp-utils"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "futures-core",
@@ -7140,7 +7157,7 @@ dependencies = [
 [[package]]
 name = "sp-version"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "impl-serde 0.2.3",
  "parity-scale-codec",
@@ -7152,7 +7169,7 @@ dependencies = [
 [[package]]
 name = "sp-wasm-interface"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "impl-trait-for-tuples",
  "parity-scale-codec",
@@ -7283,7 +7300,7 @@ dependencies = [
 [[package]]
 name = "substrate-browser-utils"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "chrono",
  "clear_on_drop",
@@ -7310,7 +7327,7 @@ dependencies = [
 [[package]]
 name = "substrate-build-script-utils"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "platforms",
 ]
@@ -7318,7 +7335,7 @@ dependencies = [
 [[package]]
 name = "substrate-frame-rpc-system"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "frame-system-rpc-runtime-api",
  "futures 0.3.5",
@@ -7339,7 +7356,7 @@ dependencies = [
 [[package]]
 name = "substrate-prometheus-endpoint"
 version = "0.8.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "async-std",
  "derive_more 0.99.7",
@@ -7353,7 +7370,7 @@ dependencies = [
 [[package]]
 name = "substrate-test-client"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "hash-db",
@@ -7374,7 +7391,7 @@ dependencies = [
 [[package]]
 name = "substrate-test-runtime"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "cfg-if",
  "frame-executive",
@@ -7414,7 +7431,7 @@ dependencies = [
 [[package]]
 name = "substrate-test-runtime-client"
 version = "2.0.0-rc2"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 dependencies = [
  "futures 0.3.5",
  "parity-scale-codec",
@@ -7434,7 +7451,7 @@ dependencies = [
 [[package]]
 name = "substrate-wasm-builder-runner"
 version = "1.0.6"
-source = "git+https://github.com/paritytech/substrate#d68cfd7cd5c64cb0965b49d9868aff02849e077c"
+source = "git+https://github.com/paritytech/substrate#39a3372aa18ed592e51688ab2e30fa79a779ad4e"
 
 [[package]]
 name = "substrate-wasm-builder-runner"
@@ -7660,7 +7677,7 @@ dependencies = [
 
 [[package]]
 name = "test-parachain-adder"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "dlmalloc",
  "parity-scale-codec",
@@ -7699,7 +7716,7 @@ dependencies = [
 
 [[package]]
 name = "test-parachain-halt"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "substrate-wasm-builder-runner 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -8567,7 +8584,7 @@ dependencies = [
 
 [[package]]
 name = "westend-runtime"
-version = "0.8.3"
+version = "0.8.4"
 dependencies = [
  "bitvec",
  "frame-benchmarking",
@@ -8592,6 +8609,7 @@ dependencies = [
  "pallet-im-online",
  "pallet-indices",
  "pallet-membership",
+ "pallet-multisig",
  "pallet-nicks",
  "pallet-offences",
  "pallet-offences-benchmarking",
diff --git a/polkadot/Cargo.toml b/polkadot/Cargo.toml
index a2a9ad2c53..e477ee187b 100644
--- a/polkadot/Cargo.toml
+++ b/polkadot/Cargo.toml
@@ -4,7 +4,7 @@ path = "src/main.rs"
 
 [package]
 name = "polkadot"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/availability-store/Cargo.toml b/polkadot/availability-store/Cargo.toml
index 71af1a1c0d..47184fd34a 100644
--- a/polkadot/availability-store/Cargo.toml
+++ b/polkadot/availability-store/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "polkadot-availability-store"
 description = "Persistent database for parachain data"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/cli/Cargo.toml b/polkadot/cli/Cargo.toml
index 7b0eca6ca0..73de6e4fb3 100644
--- a/polkadot/cli/Cargo.toml
+++ b/polkadot/cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-cli"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 description = "Polkadot Relay-chain Client Node"
 edition = "2018"
diff --git a/polkadot/collator/Cargo.toml b/polkadot/collator/Cargo.toml
index 2e121ddfd3..6f62a9617e 100644
--- a/polkadot/collator/Cargo.toml
+++ b/polkadot/collator/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-collator"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 description = "Collator node implementation"
 edition = "2018"
diff --git a/polkadot/erasure-coding/Cargo.toml b/polkadot/erasure-coding/Cargo.toml
index 956d3448e7..99d6cc8e73 100644
--- a/polkadot/erasure-coding/Cargo.toml
+++ b/polkadot/erasure-coding/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-erasure-coding"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/network/Cargo.toml b/polkadot/network/Cargo.toml
index 717d0b1b5e..0c7cf0ef04 100644
--- a/polkadot/network/Cargo.toml
+++ b/polkadot/network/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-network"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 description = "Polkadot-specific networking protocol"
 edition = "2018"
diff --git a/polkadot/network/test/Cargo.toml b/polkadot/network/test/Cargo.toml
index d49023c1a3..3f7c988503 100644
--- a/polkadot/network/test/Cargo.toml
+++ b/polkadot/network/test/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-network-test"
-version = "0.8.3"
+version = "0.8.4"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
diff --git a/polkadot/parachain/Cargo.toml b/polkadot/parachain/Cargo.toml
index 0924b994e5..2472ab625c 100644
--- a/polkadot/parachain/Cargo.toml
+++ b/polkadot/parachain/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-parachain"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 description = "Types and utilities for creating and working with parachains"
 edition = "2018"
diff --git a/polkadot/parachain/test-parachains/adder/Cargo.toml b/polkadot/parachain/test-parachains/adder/Cargo.toml
index 33d3a10fed..d8590de895 100644
--- a/polkadot/parachain/test-parachains/adder/Cargo.toml
+++ b/polkadot/parachain/test-parachains/adder/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "test-parachain-adder"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 description = "Test parachain which adds to a number as its state transition"
 edition = "2018"
diff --git a/polkadot/parachain/test-parachains/halt/Cargo.toml b/polkadot/parachain/test-parachains/halt/Cargo.toml
index 87d074bb33..008c6ea4ca 100644
--- a/polkadot/parachain/test-parachains/halt/Cargo.toml
+++ b/polkadot/parachain/test-parachains/halt/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "test-parachain-halt"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 description = "Test parachain which executes forever"
 edition = "2018"
diff --git a/polkadot/primitives/Cargo.toml b/polkadot/primitives/Cargo.toml
index 144e1a31ec..072e5ea835 100644
--- a/polkadot/primitives/Cargo.toml
+++ b/polkadot/primitives/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-primitives"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/rpc/Cargo.toml b/polkadot/rpc/Cargo.toml
index e8b3d68ae8..39f53ef48f 100644
--- a/polkadot/rpc/Cargo.toml
+++ b/polkadot/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-rpc"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/runtime/common/Cargo.toml b/polkadot/runtime/common/Cargo.toml
index 3730077bb5..926d4e6ce9 100644
--- a/polkadot/runtime/common/Cargo.toml
+++ b/polkadot/runtime/common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-runtime-common"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/runtime/kusama/Cargo.toml b/polkadot/runtime/kusama/Cargo.toml
index 362001e3dc..82e8e765e4 100644
--- a/polkadot/runtime/kusama/Cargo.toml
+++ b/polkadot/runtime/kusama/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kusama-runtime"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 build = "build.rs"
@@ -46,6 +46,7 @@ identity = { package = "pallet-identity", git = "https://github.com/paritytech/s
 im-online = { package = "pallet-im-online", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 indices = { package = "pallet-indices", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 membership = { package = "pallet-membership", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+multisig = { package = "pallet-multisig", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 nicks = { package = "pallet-nicks", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 offences = { package = "pallet-offences", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 proxy = { package = "pallet-proxy", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -118,6 +119,7 @@ std = [
 	"im-online/std",
 	"indices/std",
 	"membership/std",
+	"multisig/std",
 	"nicks/std",
 	"offences/std",
 	"proxy/std",
diff --git a/polkadot/runtime/kusama/src/lib.rs b/polkadot/runtime/kusama/src/lib.rs
index 64768451dc..8c1b9a582e 100644
--- a/polkadot/runtime/kusama/src/lib.rs
+++ b/polkadot/runtime/kusama/src/lib.rs
@@ -84,7 +84,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("kusama"),
 	impl_name: create_runtime_str!("parity-kusama"),
 	authoring_version: 2,
-	spec_version: 2000,
+	spec_version: 2004,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,
@@ -100,12 +100,14 @@ pub fn native_version() -> NativeVersion {
 }
 
 /// Avoid processing transactions from slots and parachain registrar.
-pub struct IsCallable;
-impl Filter<Call> for IsCallable {
+pub struct BaseFilter;
+impl Filter<Call> for BaseFilter {
 	fn filter(call: &Call) -> bool {
 		!matches!(call, Call::Slots(_) | Call::Registrar(_))
 	}
 }
+pub struct IsCallable;
+frame_support::impl_filter_stack!(IsCallable, BaseFilter, Call, is_callable);
 
 parameter_types! {
 	pub const Version: RuntimeVersion = VERSION;
@@ -688,20 +690,26 @@ impl identity::Trait for Runtime {
 	type ForceOrigin = collective::EnsureProportionMoreThan<_1, _2, AccountId, CouncilCollective>;
 }
 
-parameter_types! {
-	// One storage item; value is size 4+4+16+32 bytes = 56 bytes.
-	pub const MultisigDepositBase: Balance = 30 * CENTS;
-	// Additional storage item size of 32 bytes.
-	pub const MultisigDepositFactor: Balance = 5 * CENTS;
-	pub const MaxSignatories: u16 = 100;
-}
-
 impl utility::Trait for Runtime {
+	type Event = Event;
+	type Call = Call;
+	type IsCallable = IsCallable;
+}
+
+parameter_types! {
+	// One storage item; key size is 32; value is size 4+4+16+32 bytes = 56 bytes.
+	pub const DepositBase: Balance = deposit(1, 88);
+	// Additional storage item size of 32 bytes.
+	pub const DepositFactor: Balance = deposit(0, 32);
+	pub const MaxSignatories: u16 = 100;
+}
+
+impl multisig::Trait for Runtime {
 	type Event = Event;
 	type Call = Call;
 	type Currency = Balances;
-	type MultisigDepositBase = MultisigDepositBase;
-	type MultisigDepositFactor = MultisigDepositFactor;
+	type DepositBase = DepositBase;
+	type DepositFactor = DepositFactor;
 	type MaxSignatories = MaxSignatories;
 	type IsCallable = IsCallable;
 }
@@ -783,16 +791,29 @@ impl InstanceFilter<Call> for ProxyType {
 	fn filter(&self, c: &Call) -> bool {
 		match self {
 			ProxyType::Any => true,
+			ProxyType::NonTransfer => !matches!(c,
+				Call::Balances(..) | Call::Vesting(vesting::Call::vested_transfer(..))
+					| Call::Indices(indices::Call::transfer(..))
+			),
 			ProxyType::Governance => matches!(c,
 				Call::Democracy(..) | Call::Council(..) | Call::TechnicalCommittee(..)
 					| Call::ElectionsPhragmen(..) | Call::Treasury(..)
+					| Call::Utility(utility::Call::batch(..))
+					| Call::Utility(utility::Call::as_limited_sub(..))
 			),
-			ProxyType::NonTransfer => !matches!(c,
-				Call::Balances(..) | Call::Utility(..)
-					| Call::Vesting(vesting::Call::vested_transfer(..))
-					| Call::Indices(indices::Call::transfer(..))
+			ProxyType::Staking => matches!(c,
+				Call::Staking(..) | Call::Utility(utility::Call::batch(..))
+					| Call::Utility(utility::Call::as_limited_sub(..))
 			),
-			ProxyType::Staking => matches!(c, Call::Staking(..)),
+		}
+	}
+	fn is_superset(&self, o: &Self) -> bool {
+		match (self, o) {
+			(x, y) if x == y => true,
+			(ProxyType::Any, _) => true,
+			(_, ProxyType::Any) => false,
+			(ProxyType::NonTransfer, _) => true,
+			_ => false,
 		}
 	}
 }
@@ -856,7 +877,7 @@ construct_runtime! {
 		Registrar: registrar::{Module, Call, Storage, Event, Config<T>},
 
 		// Utility module.
-		Utility: utility::{Module, Call, Storage, Event<T>},
+		Utility: utility::{Module, Call, Event},
 
 		// Less simple identity module.
 		Identity: identity::{Module, Call, Storage, Event<T>},
@@ -874,7 +895,10 @@ construct_runtime! {
 		Scheduler: scheduler::{Module, Call, Storage, Event<T>},
 
 		// Proxy module. Late addition.
-		Proxy: proxy::{Module, Call, Storage, Event<T>}
+		Proxy: proxy::{Module, Call, Storage, Event<T>},
+
+		// Multisig module. Late addition.
+		Multisig: multisig::{Module, Call, Storage, Event<T>},
 	}
 }
 
diff --git a/polkadot/runtime/polkadot/Cargo.toml b/polkadot/runtime/polkadot/Cargo.toml
index ebea63e901..3a807d82c2 100644
--- a/polkadot/runtime/polkadot/Cargo.toml
+++ b/polkadot/runtime/polkadot/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-runtime"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 build = "build.rs"
@@ -45,6 +45,7 @@ identity = { package = "pallet-identity", git = "https://github.com/paritytech/s
 im-online = { package = "pallet-im-online", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 indices = { package = "pallet-indices", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 membership = { package = "pallet-membership", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+multisig = { package = "pallet-multisig", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 nicks = { package = "pallet-nicks", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 offences = { package = "pallet-offences", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 proxy = { package = "pallet-proxy", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -115,6 +116,7 @@ std = [
 	"im-online/std",
 	"indices/std",
 	"membership/std",
+	"multisig/std",
 	"nicks/std",
 	"offences/std",
 	"proxy/std",
diff --git a/polkadot/runtime/polkadot/src/lib.rs b/polkadot/runtime/polkadot/src/lib.rs
index e947844fbd..f9e4ad5d1a 100644
--- a/polkadot/runtime/polkadot/src/lib.rs
+++ b/polkadot/runtime/polkadot/src/lib.rs
@@ -89,7 +89,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("polkadot"),
 	impl_name: create_runtime_str!("parity-polkadot"),
 	authoring_version: 0,
-	spec_version: 3,
+	spec_version: 4,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 0,
@@ -104,8 +104,8 @@ pub fn native_version() -> NativeVersion {
 	}
 }
 
-pub struct IsCallable;
-impl Filter<Call> for IsCallable {
+pub struct BaseFilter;
+impl Filter<Call> for BaseFilter {
 	fn filter(call: &Call) -> bool {
 		match call {
 			Call::Parachains(parachains::Call::set_heads(..)) => true,
@@ -127,11 +127,13 @@ impl Filter<Call> for IsCallable {
 			Call::Session(_) | Call::FinalityTracker(_) | Call::Grandpa(_) | Call::ImOnline(_) |
 			Call::AuthorityDiscovery(_) |
 			Call::Utility(_) | Call::Claims(_) | Call::Vesting(_) | Call::Sudo(_) |
-			Call::Identity(_) | Call::Proxy(_) =>
+			Call::Identity(_) | Call::Proxy(_) | Call::Multisig(_) =>
 				true,
 		}
 	}
 }
+pub struct IsCallable;
+frame_support::impl_filter_stack!(IsCallable, BaseFilter, Call, is_callable);
 
 parameter_types! {
 	pub const Version: RuntimeVersion = VERSION;
@@ -720,20 +722,26 @@ impl vesting::Trait for Runtime {
 	type MinVestedTransfer = MinVestedTransfer;
 }
 
-parameter_types! {
-	// One storage item; value is size 4+4+16+32 bytes = 56 bytes.
-	pub const MultisigDepositBase: Balance = 30 * CENTS;
-	// Additional storage item size of 32 bytes.
-	pub const MultisigDepositFactor: Balance = 5 * CENTS;
-	pub const MaxSignatories: u16 = 100;
-}
-
 impl utility::Trait for Runtime {
+	type Event = Event;
+	type Call = Call;
+	type IsCallable = IsCallable;
+}
+
+parameter_types! {
+	// One storage item; key size is 32; value is size 4+4+16+32 bytes = 56 bytes.
+	pub const DepositBase: Balance = deposit(1, 88);
+	// Additional storage item size of 32 bytes.
+	pub const DepositFactor: Balance = deposit(0, 32);
+	pub const MaxSignatories: u16 = 100;
+}
+
+impl multisig::Trait for Runtime {
 	type Event = Event;
 	type Call = Call;
 	type Currency = Balances;
-	type MultisigDepositBase = MultisigDepositBase;
-	type MultisigDepositFactor = MultisigDepositFactor;
+	type DepositBase = DepositBase;
+	type DepositFactor = DepositFactor;
 	type MaxSignatories = MaxSignatories;
 	type IsCallable = IsCallable;
 }
@@ -758,6 +766,7 @@ pub enum ProxyType {
 	NonTransfer,
 	Governance,
 	Staking,
+	SudoBalances,
 }
 impl Default for ProxyType { fn default() -> Self { Self::Any } }
 impl InstanceFilter<Call> for ProxyType {
@@ -765,15 +774,31 @@ impl InstanceFilter<Call> for ProxyType {
 		match self {
 			ProxyType::Any => true,
 			ProxyType::NonTransfer => !matches!(c,
-				Call::Balances(..) | Call::Utility(..)
-					| Call::Vesting(vesting::Call::vested_transfer(..))
+				Call::Balances(..) | Call::Vesting(vesting::Call::vested_transfer(..))
 					| Call::Indices(indices::Call::transfer(..))
 			),
 			ProxyType::Governance => matches!(c,
 				Call::Democracy(..) | Call::Council(..) | Call::TechnicalCommittee(..)
 					| Call::ElectionsPhragmen(..) | Call::Treasury(..)
+					| Call::Utility(utility::Call::batch(..))
+					| Call::Utility(utility::Call::as_limited_sub(..))
 			),
-			ProxyType::Staking => matches!(c, Call::Staking(..)),
+			ProxyType::Staking => matches!(c,
+				Call::Staking(..) | Call::Utility(utility::Call::batch(..))
+					| Call::Utility(utility::Call::as_limited_sub(..))
+			),
+			ProxyType::SudoBalances => matches!(c,
+				Call::Sudo(sudo::Call::sudo(x)) if matches!(x.as_ref(), &Call::Balances(..))
+			),
+		}
+	}
+	fn is_superset(&self, o: &Self) -> bool {
+		match (self, o) {
+			(x, y) if x == y => true,
+			(ProxyType::Any, _) => true,
+			(_, ProxyType::Any) => false,
+			(ProxyType::NonTransfer, _) => true,
+			_ => false,
 		}
 	}
 }
@@ -841,7 +866,7 @@ construct_runtime! {
 		// Vesting. Usable initially, but removed once all vesting is finished.
 		Vesting: vesting::{Module, Call, Storage, Event<T>, Config<T>},
 		// Cunning utilities. Usable initially.
-		Utility: utility::{Module, Call, Storage, Event<T>},
+		Utility: utility::{Module, Call, Event},
 
 		// Sudo. Last module. Usable initially, but removed once governance enabled.
 		Sudo: sudo::{Module, Call, Storage, Config<T>, Event<T>},
@@ -850,7 +875,10 @@ construct_runtime! {
 		Identity: identity::{Module, Call, Storage, Event<T>},
 
 		// Proxy module. Late addition.
-		Proxy: proxy::{Module, Call, Storage, Event<T>}
+		Proxy: proxy::{Module, Call, Storage, Event<T>},
+
+		// Multisig dispatch. Late addition.
+		Multisig: multisig::{Module, Call, Storage, Event<T>},
 	}
 }
 
diff --git a/polkadot/runtime/test-runtime/Cargo.toml b/polkadot/runtime/test-runtime/Cargo.toml
index c0cd0b6f7d..c941c16686 100644
--- a/polkadot/runtime/test-runtime/Cargo.toml
+++ b/polkadot/runtime/test-runtime/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-test-runtime"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 build = "build.rs"
diff --git a/polkadot/runtime/westend/Cargo.toml b/polkadot/runtime/westend/Cargo.toml
index 3f0406eb32..3f8d4ea2b2 100644
--- a/polkadot/runtime/westend/Cargo.toml
+++ b/polkadot/runtime/westend/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "westend-runtime"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 build = "build.rs"
@@ -46,6 +46,7 @@ identity = { package = "pallet-identity", git = "https://github.com/paritytech/s
 im-online = { package = "pallet-im-online", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 indices = { package = "pallet-indices", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 membership = { package = "pallet-membership", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+multisig = { package = "pallet-multisig", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 nicks = { package = "pallet-nicks", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 offences = { package = "pallet-offences", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 proxy = { package = "pallet-proxy", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -121,6 +122,7 @@ std = [
 	"im-online/std",
 	"indices/std",
 	"membership/std",
+	"multisig/std",
 	"nicks/std",
 	"offences/std",
 	"proxy/std",
diff --git a/polkadot/runtime/westend/src/lib.rs b/polkadot/runtime/westend/src/lib.rs
index 26ab0a8e42..88e033f649 100644
--- a/polkadot/runtime/westend/src/lib.rs
+++ b/polkadot/runtime/westend/src/lib.rs
@@ -82,7 +82,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("westend"),
 	impl_name: create_runtime_str!("parity-westend"),
 	authoring_version: 2,
-	spec_version: 20,
+	spec_version: 24,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 	transaction_version: 1,
@@ -98,12 +98,14 @@ pub fn native_version() -> NativeVersion {
 }
 
 /// Avoid processing transactions from slots and parachain registrar.
-pub struct IsCallable;
-impl Filter<Call> for IsCallable {
+pub struct BaseFilter;
+impl Filter<Call> for BaseFilter {
 	fn filter(call: &Call) -> bool {
 		!matches!(call, Call::Registrar(_))
 	}
 }
+pub struct IsCallable;
+frame_support::impl_filter_stack!(IsCallable, BaseFilter, Call, is_callable);
 
 parameter_types! {
 	pub const Version: RuntimeVersion = VERSION;
@@ -520,20 +522,26 @@ impl identity::Trait for Runtime {
 	type ForceOrigin = system::EnsureRoot<AccountId>;
 }
 
-parameter_types! {
-	// One storage item; value is size 4+4+16+32 bytes = 56 bytes.
-	pub const MultisigDepositBase: Balance = 30 * CENTS;
-	// Additional storage item size of 32 bytes.
-	pub const MultisigDepositFactor: Balance = 5 * CENTS;
-	pub const MaxSignatories: u16 = 100;
-}
-
 impl utility::Trait for Runtime {
+	type Event = Event;
+	type Call = Call;
+	type IsCallable = IsCallable;
+}
+
+parameter_types! {
+	// One storage item; key size is 32; value is size 4+4+16+32 bytes = 56 bytes.
+	pub const DepositBase: Balance = deposit(1, 88);
+	// Additional storage item size of 32 bytes.
+	pub const DepositFactor: Balance = deposit(0, 32);
+	pub const MaxSignatories: u16 = 100;
+}
+
+impl multisig::Trait for Runtime {
 	type Event = Event;
 	type Call = Call;
 	type Currency = Balances;
-	type MultisigDepositBase = MultisigDepositBase;
-	type MultisigDepositFactor = MultisigDepositFactor;
+	type DepositBase = DepositBase;
+	type DepositFactor = DepositFactor;
 	type MaxSignatories = MaxSignatories;
 	type IsCallable = IsCallable;
 }
@@ -585,6 +593,7 @@ pub enum ProxyType {
 	Any,
 	NonTransfer,
 	Staking,
+	SudoBalances,
 }
 impl Default for ProxyType { fn default() -> Self { Self::Any } }
 impl InstanceFilter<Call> for ProxyType {
@@ -592,9 +601,24 @@ impl InstanceFilter<Call> for ProxyType {
 		match self {
 			ProxyType::Any => true,
 			ProxyType::NonTransfer => !matches!(c,
-				Call::Balances(..) | Call::Utility(..) | Call::Indices(indices::Call::transfer(..))
+				Call::Balances(..) | Call::Indices(indices::Call::transfer(..))
 			),
-			ProxyType::Staking => matches!(c, Call::Staking(..)),
+			ProxyType::Staking => matches!(c,
+				Call::Staking(..) | Call::Utility(utility::Call::batch(..))
+					| Call::Utility(utility::Call::as_limited_sub(..))
+			),
+			ProxyType::SudoBalances => matches!(c,
+				Call::Sudo(sudo::Call::sudo(x)) if matches!(x.as_ref(), &Call::Balances(..))
+			),
+		}
+	}
+	fn is_superset(&self, o: &Self) -> bool {
+		match (self, o) {
+			(x, y) if x == y => true,
+			(ProxyType::Any, _) => true,
+			(_, ProxyType::Any) => false,
+			(ProxyType::NonTransfer, _) => true,
+			_ => false,
 		}
 	}
 }
@@ -646,7 +670,7 @@ construct_runtime! {
 		Registrar: registrar::{Module, Call, Storage, Event, Config<T>},
 
 		// Utility module.
-		Utility: utility::{Module, Call, Storage, Event<T>},
+		Utility: utility::{Module, Call, Event},
 
 		// Less simple identity module.
 		Identity: identity::{Module, Call, Storage, Event<T>},
@@ -664,7 +688,10 @@ construct_runtime! {
 		Sudo: sudo::{Module, Call, Storage, Event<T>, Config<T>},
 
 		// Proxy module. Late addition.
-		Proxy: proxy::{Module, Call, Storage, Event<T>}
+		Proxy: proxy::{Module, Call, Storage, Event<T>},
+
+		// Multisig module. Late addition.
+		Multisig: multisig::{Module, Call, Storage, Event<T>},
 	}
 }
 
diff --git a/polkadot/service/Cargo.toml b/polkadot/service/Cargo.toml
index 5d7cb2a54b..fb86c83f9b 100644
--- a/polkadot/service/Cargo.toml
+++ b/polkadot/service/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-service"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/statement-table/Cargo.toml b/polkadot/statement-table/Cargo.toml
index bf2f8cedb5..5b96ca894c 100644
--- a/polkadot/statement-table/Cargo.toml
+++ b/polkadot/statement-table/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-statement-table"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
diff --git a/polkadot/validation/Cargo.toml b/polkadot/validation/Cargo.toml
index 0930012376..b2168edf8c 100644
--- a/polkadot/validation/Cargo.toml
+++ b/polkadot/validation/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "polkadot-validation"
-version = "0.8.3"
+version = "0.8.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"