diff --git a/Cargo.lock b/Cargo.lock
index 723a09ee9a39f..c4151358141a3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3506,9 +3506,9 @@ checksum = "3576a87f2ba00f6f106fdfcd16db1d698d648a26ad8e0573cad8537c3c362d2a"
 
 [[package]]
 name = "libc"
-version = "0.2.126"
+version = "0.2.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
 
 [[package]]
 name = "libgit2-sys"
diff --git a/client/executor/wasmtime/Cargo.toml b/client/executor/wasmtime/Cargo.toml
index fc6d5db14aa1d..2a61324a17c6f 100644
--- a/client/executor/wasmtime/Cargo.toml
+++ b/client/executor/wasmtime/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 cfg-if = "1.0"
 codec = { package = "parity-scale-codec", version = "3.0.0" }
-libc = "0.2.121"
+libc = "0.2.138"
 log = "0.4.17"
 parity-wasm = "0.45"
 
diff --git a/client/tracing/Cargo.toml b/client/tracing/Cargo.toml
index 8bc5d770c9c5a..70bf011524581 100644
--- a/client/tracing/Cargo.toml
+++ b/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 = "0.2.121"
+libc = "0.2.138"
 log = { version = "0.4.17" }
 once_cell = "1.8.0"
 parking_lot = "0.12.1"