diff --git a/Cargo.lock b/Cargo.lock
index 9caeefc6..bdcbffba 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1280,9 +1280,9 @@ checksum = "2c4a545a15244c7d945065b5d392b2d2d7f21526fba56ce51467b06ed445e8f7"
 
 [[package]]
 name = "libc"
-version = "0.2.175"
+version = "0.2.177"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a82ae493e598baaea5209805c49bbf2ea7de956d50d7da0da1164f9c6d28543"
+checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"
 
 [[package]]
 name = "libz-rs-sys"
diff --git a/unity-version/Cargo.toml b/unity-version/Cargo.toml
index 4db14374..b14d9cd7 100644
--- a/unity-version/Cargo.toml
+++ b/unity-version/Cargo.toml
@@ -32,7 +32,7 @@ plist = "1.7.0"
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["winver","memoryapi"] }
 widestring = "1.2.0"
-libc = "0.2.80"
+libc = "0.2.177"
 
 [dev-dependencies]
 proptest = "1.4.0"