diff --git a/CHANGELOG.md b/CHANGELOG.md
index 939dd487..6b686bc1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2023-11-01
+
 ### Added
 - `detect_language` option.
 
@@ -13,7 +15,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Remove generic from `Deepgram` struct.
 - Upgrade dependencies: `tungstenite`, `tokio-tungstenite`, `reqwest`.
 
-
 ## [0.3.0]
 
 ### Added
@@ -26,5 +27,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Use Rustls instead of OpenSSL.
 
-[Unreleased]: https://github.com/deepgram-devs/deepgram-rust-sdk/compare/0.3.0...HEAD
+[Unreleased]: https://github.com/deepgram-devs/deepgram-rust-sdk/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/deepgram-devs/deepgram-rust-sdk/compare/0.3.0...0.4.0
 [0.3.0]: https://github.com/deepgram-devs/deepgram-rust-sdk/compare/0.2.1...0.3.0
diff --git a/Cargo.toml b/Cargo.toml
index dfd7a97a..3db6f109 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deepgram"
-version = "0.4.0-alpha.2"
+version = "0.4.0"
 authors = ["Deepgram <developers@deepgram.com>"]
 edition = "2021"
 description = "Official Rust SDK for Deepgram's automated speech recognition APIs."