diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index 6325304bfc..ed10002bd5 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -3266,9 +3266,9 @@ checksum = "3576a87f2ba00f6f106fdfcd16db1d698d648a26ad8e0573cad8537c3c362d2a"
 
 [[package]]
 name = "libc"
-version = "0.2.103"
+version = "0.2.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd8f7255a17a627354f321ef0055d63b898c6fb27eff628af4d1b66b7331edf6"
+checksum = "869d572136620d55835903746bcb5cdc54cb2851fd0aeec53220b4bb65ef3013"
 
 [[package]]
 name = "libgit2-sys"
diff --git a/substrate/client/executor/wasmtime/Cargo.toml b/substrate/client/executor/wasmtime/Cargo.toml
index 9fb76ed08f..7a877bd957 100644
--- a/substrate/client/executor/wasmtime/Cargo.toml
+++ b/substrate/client/executor/wasmtime/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-libc = "0.2.90"
+libc = "0.2.105"
 cfg-if = "1.0"
 log = "0.4.8"
 parity-wasm = "0.42.0"
diff --git a/substrate/client/tracing/Cargo.toml b/substrate/client/tracing/Cargo.toml
index 4939e6a731..8093420dc5 100644
--- a/substrate/client/tracing/Cargo.toml
+++ b/substrate/client/tracing/Cargo.toml
@@ -17,7 +17,7 @@ ansi_term = "0.12.1"
 atty = "0.2.13"
 chrono = "0.4.19"
 lazy_static = "1.4.0"
-libc = "0.2.95"
+libc = "0.2.105"
 log = { version = "0.4.8" }
 once_cell = "1.8.0"
 parking_lot = "0.11.1"