diff --git a/Cargo.lock b/Cargo.lock
index 0946d79..d32a9fd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -115,9 +115,9 @@ dependencies = [
 
 [[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 = "libsystemd-sys"
diff --git a/libsystemd-sys/Cargo.toml b/libsystemd-sys/Cargo.toml
index 39640e3..aa321f7 100644
--- a/libsystemd-sys/Cargo.toml
+++ b/libsystemd-sys/Cargo.toml
@@ -19,7 +19,7 @@ systemd_v245 = []
 
 [dependencies]
 cfg-if = "1.0.0"
-libc = "0.2.76"
+libc = "0.2.155"
 
 [build-dependencies]
 pkg-config = "0.3.18"