diff --git a/src/_bcrypt/Cargo.lock b/src/_bcrypt/Cargo.lock
index 64f516a..3e17abf 100644
--- a/src/_bcrypt/Cargo.lock
+++ b/src/_bcrypt/Cargo.lock
@@ -188,9 +188,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.127"
+version = "0.2.129"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "505e71a4706fa491e9b1b55f51b95d4037d0821ee40131190475f692b35b009b"
+checksum = "64de3cc433455c14174d42e554d4027ee631c4d046d43e3ecc6efc4636cdc7a7"
 
 [[package]]
 name = "lock_api"