diff --git a/CHANGELOG.md b/CHANGELOG.md
index bf63ee1..135a186 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [0.3.1] - 2023-06-16
 ### Changed
 - Bump `rustler` to 0.28 to support OTP 26
 
@@ -58,7 +60,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Initial release
 
 
-[Unreleased]: https://github.com/benhaney/Jsonrs/compare/v0.3.0...HEAD
+[Unreleased]: https://github.com/benhaney/Jsonrs/compare/v0.3.1...HEAD
+[0.3.1]: https://github.com/benhaney/Jsonrs/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/benhaney/Jsonrs/compare/v0.2.1...v0.3.0
 [0.2.1]: https://github.com/benhaney/Jsonrs/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/benhaney/Jsonrs/compare/v0.1.6...v0.2.0
diff --git a/README.md b/README.md
index 0edde9e..8309643 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Add Jsonrs as a dependency in your `mix.exs` file.
 
 ```elixir
 def deps do
-  [{:jsonrs, "~> 0.3.0"}]
+  [{:jsonrs, "~> 0.3.1"}]
 end
 ```
 
diff --git a/mix.exs b/mix.exs
index 59e5d9b..e62cbb7 100644
--- a/mix.exs
+++ b/mix.exs
@@ -36,7 +36,7 @@ defmodule Jsonrs.MixProject do
 
   defp rustler_crates do
     [
-      jsonrs: [path: "native/jsonrs", mode: if(Mix.env() == :prod, do: :release, else: :debug)]
+      jsonrs: [path: "native/jsonrs"]
     ]
   end
 
diff --git a/native/jsonrs/Cargo.lock b/native/jsonrs/Cargo.lock
index dfdf7cc..70ea353 100644
--- a/native/jsonrs/Cargo.lock
+++ b/native/jsonrs/Cargo.lock
@@ -17,27 +17,12 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "cc"
-version = "1.0.79"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "cmake"
-version = "0.1.50"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a31c789563b815f77f4250caee12365734369f942439b7defd71e18a48197130"
-dependencies = [
- "cc",
-]
-
 [[package]]
 name = "crc32fast"
 version = "1.3.2"
@@ -54,7 +39,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3b9429470923de8e8cbd4d2dc513535400b4b3fef0319fb5c4e1f520a7bef743"
 dependencies = [
  "crc32fast",
- "libz-ng-sys",
  "miniz_oxide",
 ]
 
@@ -72,7 +56,7 @@ checksum = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 
 [[package]]
 name = "jsonrs"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "flate2",
  "lazy_static",
@@ -89,22 +73,6 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
-[[package]]
-name = "libc"
-version = "0.2.146"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
-
-[[package]]
-name = "libz-ng-sys"
-version = "1.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2468756f34903b582fe7154dc1ffdebd89d0562c4a43b53c621bb0f1b1043ccb"
-dependencies = [
- "cmake",
- "libc",
-]
-
 [[package]]
 name = "memchr"
 version = "2.5.0"
diff --git a/native/jsonrs/Cargo.toml b/native/jsonrs/Cargo.toml
index 3414e96..2deba22 100644
--- a/native/jsonrs/Cargo.toml
+++ b/native/jsonrs/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "jsonrs"
-version = "0.3.0"
+version = "0.3.1"
 authors = []
 edition = "2018"
 
@@ -10,7 +10,7 @@ path = "src/lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-flate2 = { version = "1.0", features = ["zlib-ng"], default-features = false }
+flate2 = "1.0"
 rustler = "0.28.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"