diff --git a/Cargo.lock b/Cargo.lock
index bab571ac..aa517731 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -901,9 +901,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.154"
+version = "0.2.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae743338b92ff9146ce83992f766a31066a91a8c84a45e0e9f21e7cf6de6d346"
+checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
 [[package]]
 name = "linux-raw-sys"
diff --git a/Cargo.toml b/Cargo.toml
index d98238cb..1f12d1b4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -87,7 +87,7 @@ doc = true
 doctest = true
 bench = false
 [target.'cfg(windows)'.dependencies]
-libc = "0.2.154"
+libc = "0.2.155"
 
 [[bin]]
 name = "s4"