diff --git a/Cargo.toml b/Cargo.toml
index 83371fe8..c4ef9632 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "flate2"
 authors = ["Alex Crichton <alex@alexcrichton.com>", "Josh Triplett <josh@joshtriplett.org>"]
-version = "1.0.30"
+version = "1.0.31"
 edition = "2018"
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -19,7 +19,7 @@ and raw deflate streams.
 [dependencies]
 libz-sys = { version = "1.1.8", optional = true, default-features = false }
 libz-ng-sys = { version = "1.1.8", optional = true }
-libz-rs-sys = { version = "0.1.1", optional = true, default-features = false, features = ["std", "rust-allocator"] }
+libz-rs-sys = { version = "0.2.1", optional = true, default-features = false, features = ["std", "rust-allocator"] }
 cloudflare-zlib-sys = { version = "0.3.0", optional = true }
 miniz_oxide = { version = "0.7.1", optional = true, default-features = false, features = ["with-alloc"] }
 crc32fast = "1.2.0"