diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4f38479..77e4ad2b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 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).
 
-## [0.4.0] - Unreleased
+## [0.4.0] - 2024-02-12
 
 [0.4.0]: https://github.com/HMIProject/open62541/compare/v0.3.0...v0.4.0
 
diff --git a/Cargo.lock b/Cargo.lock
index 1f6b9c2a..0b70ab75 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -476,7 +476,7 @@ checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "open62541"
-version = "0.3.0"
+version = "0.4.0"
 dependencies = [
  "anyhow",
  "env_logger",
@@ -497,9 +497,9 @@ dependencies = [
 
 [[package]]
 name = "open62541-sys"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8774f7477e6e3a0a6e617ed600dabbb839f996a5ac1324533a486f59bfdf08ec"
+checksum = "dce1e8f19365ff86515887e7093de6b3a6850d47eb50759e48469c0527fc292d"
 dependencies = [
  "bindgen",
  "cc",
diff --git a/Cargo.toml b/Cargo.toml
index e171aa5f..78f8f873 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "open62541"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["HMI Project"]
 edition = "2021"
 # Keep the MSRV number here in sync with `test.yaml`. We require Rust 1.72 (the
@@ -20,7 +20,7 @@ futures-channel = "0.3.30"
 futures-core = { version = "0.3.30", default-features = false }
 futures-util = { version = "0.3.30", default-features = false }
 log = "0.4.20"
-open62541-sys = "0.3.2"
+open62541-sys = "0.3.3"
 paste = "1.0.14"
 serde = { version = "1.0.194", optional = true }
 serde_json = { version = "1.0.111", optional = true }