diff --git a/polkadot/Cargo.lock b/polkadot/Cargo.lock
index 2175f4a26c1eec318496d208befb971551e9292b..77a864ddcd2efa97f500e3c5ca2f93fc64c7d053 100644
--- a/polkadot/Cargo.lock
+++ b/polkadot/Cargo.lock
@@ -3311,9 +3311,9 @@ checksum = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 
 [[package]]
 name = "libc"
-version = "0.2.98"
+version = "0.2.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "320cfe77175da3a483efed4bc0adc1968ca050b098ce4f2f1c13a56626128790"
+checksum = "a7f823d141fe0a24df1e23b4af4e3c7ba9e5966ec514ea068c93024aa7deb765"
 
 [[package]]
 name = "libloading"
diff --git a/polkadot/node/core/pvf/Cargo.toml b/polkadot/node/core/pvf/Cargo.toml
index 350b43cc2f0763542d9ae2bf688a03742e6eecdf..adf0171d8187777f50961e0ffd41e2a7c7b68736 100644
--- a/polkadot/node/core/pvf/Cargo.toml
+++ b/polkadot/node/core/pvf/Cargo.toml
@@ -15,7 +15,7 @@ async-process = "1.1.0"
 assert_matches = "1.4.0"
 futures = "0.3.15"
 futures-timer = "3.0.2"
-libc = "0.2.98"
+libc = "0.2.99"
 slotmap = "1.0"
 tracing = "0.1.26"
 pin-project = "1.0.7"