diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index e918ca65c2..a426e58fcf 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -2358,7 +2358,7 @@ dependencies = [
  "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)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "multistream-select 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-multiaddr 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2691,13 +2691,14 @@ dependencies = [
 
 [[package]]
 name = "libsecp256k1"
-version = "0.3.2"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crunchy 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "digest 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hmac-drbg 0.2.0 (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)",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "subtle 2.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "typenum 1.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5286,7 +5287,7 @@ dependencies = [
  "derive_more 0.99.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 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)",
- "libsecp256k1 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libsecp256k1 0.3.4 (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 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-wasm 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6275,7 +6276,7 @@ dependencies = [
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "impl-serde 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6358,7 +6359,7 @@ name = "sp-io"
 version = "2.0.0"
 dependencies = [
  "hash-db 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libsecp256k1 0.3.4 (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 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "sp-core 2.0.0",
@@ -7474,7 +7475,7 @@ name = "twox-hash"
 version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -8392,7 +8393,7 @@ dependencies = [
 "checksum libp2p-websocket 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0d74d4fc229ad7e8d1a973178786bdcd5dadbdd7b9822c4477c8687df6f82f66"
 "checksum libp2p-yamux 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1913eb7dd6eb5515957b6f1770296f6921968db87bc9b985f0e974b6657e1003"
 "checksum librocksdb-sys 6.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "0a0785e816e1e11e7599388a492c61ef80ddc2afc91e313e61662cce537809be"
-"checksum libsecp256k1 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2bd9a7c16c9487e710536b699c962f022266347c94201174aa0a7eb0546051aa"
+"checksum libsecp256k1 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "df6edf84fd62aad1c93932b39324eaeda3912c1d26bc18dfaee6293848e49a50"
 "checksum libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb5e43362e38e2bca2fd5f5134c4d4564a23a5c28e9b95411652021a8675ebe"
 "checksum linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
 "checksum linked_hash_set 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3c7c91c4c7bbeb4f2f7c4e5be11e6a05bd6830bc37249c47ce1ad86ad453ff9c"
diff --git a/substrate/client/executor/Cargo.toml b/substrate/client/executor/Cargo.toml
index 68eee17684..a2f6ebaac0 100644
--- a/substrate/client/executor/Cargo.toml
+++ b/substrate/client/executor/Cargo.toml
@@ -24,7 +24,7 @@ sc-executor-wasmi = { version = "2.0.0", path = "wasmi" }
 sc-executor-wasmtime = { version = "2.0.0", path = "wasmtime", optional = true }
 parking_lot = "0.9.0"
 log = "0.4.8"
-libsecp256k1 = "0.3.2"
+libsecp256k1 = "0.3.4"
 
 [dev-dependencies]
 assert_matches = "1.3.0"
diff --git a/substrate/primitives/io/Cargo.toml b/substrate/primitives/io/Cargo.toml
index a89b2d4c20..04350c9479 100644
--- a/substrate/primitives/io/Cargo.toml
+++ b/substrate/primitives/io/Cargo.toml
@@ -9,7 +9,7 @@ codec = { package = "parity-scale-codec", version = "1.0.6", default-features =
 hash-db = { version = "0.15.2", default-features = false }
 sp-core = { version = "2.0.0", default-features = false, path = "../core" }
 sp-std = { version = "2.0.0", default-features = false, path = "../std" }
-libsecp256k1 = { version = "0.3.0", optional = true }
+libsecp256k1 = { version = "0.3.4", optional = true }
 sp-state-machine = { version = "2.0.0", optional = true, path = "../../primitives/state-machine" }
 sp-runtime-interface = { version = "2.0.0", default-features = false, path = "../runtime-interface" }
 sp-trie = { version = "2.0.0", optional = true, path = "../../primitives/trie" }