diff --git a/Cargo.lock b/Cargo.lock
index 2627ae798..1fda8fe14 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -460,9 +460,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.135"
+version = "0.2.136"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "68783febc7782c6c5cb401fbda4de5a9898be1762314da0bb2c10ced61f18b0c"
+checksum = "55edcf6c0bb319052dea84732cf99db461780fd5e8d3eb46ab6ff312ab31f197"
 
 [[package]]
 name = "lock_api"
diff --git a/ntp-daemon/Cargo.toml b/ntp-daemon/Cargo.toml
index 113dc0bad..d491c768d 100644
--- a/ntp-daemon/Cargo.toml
+++ b/ntp-daemon/Cargo.toml
@@ -21,7 +21,7 @@ serde_json = "1.0.87"
 sentry = { version = "0.27.0", optional = true, default-features = false, features = ["backtrace", "contexts", "panic", "reqwest", "rustls"] }
 sentry-tracing = { version = "0.27.0", optional = true }
 rand = "0.8.5"
-libc = "0.2.135"
+libc = "0.2.136"
 exitcode = "1.1.2"
 prometheus-client = "0.18.1"
 
diff --git a/ntp-os-clock/Cargo.toml b/ntp-os-clock/Cargo.toml
index d6a0b3758..fad403f6c 100644
--- a/ntp-os-clock/Cargo.toml
+++ b/ntp-os-clock/Cargo.toml
@@ -8,5 +8,5 @@ license = "Apache-2.0 OR MIT"
 
 [dependencies]
 ntp-proto = { path = "../ntp-proto" }
-libc = "0.2.135"
+libc = "0.2.136"
 thiserror = "1.0.37"
diff --git a/ntp-udp/Cargo.toml b/ntp-udp/Cargo.toml
index 2ad110c90..3948ce5d6 100644
--- a/ntp-udp/Cargo.toml
+++ b/ntp-udp/Cargo.toml
@@ -8,7 +8,7 @@ license = "Apache-2.0 OR MIT"
 
 [dependencies]
 tokio = { version = "1.21.2", features = ["net"] }
-libc = "0.2.135"
+libc = "0.2.136"
 ntp-proto = { path = "../ntp-proto" }
 tracing = "0.1.37"