diff --git a/Cargo.lock b/Cargo.lock
index 0d3be16..3acb0d0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -678,9 +678,9 @@ checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
 
 [[package]]
 name = "libz-sys"
-version = "1.1.16"
+version = "1.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e143b5e666b2695d28f6bca6497720813f699c9602dd7f5cac91008b8ada7f9"
+checksum = "c15da26e5af7e25c90b37a2d75cdbf940cf4a55316de9d84c679c9b8bfabf82e"
 dependencies = [
  "cc",
  "libc",