diff --git a/CHANGELOG.md b/CHANGELOG.md
index 93190bb..55fca45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased][unreleased]
 
+## [4.5.1] - 2024-03-26
+
+### Commits
+
+- Updated .gitattributes ([28e541d](https://github.com/pronamic/wp-pronamic-pay-adyen/commit/28e541d95d06be05a93af272dfa6d48ffae9c09e))
+- Added `if ( ! defined( 'ABSPATH' ) )`. ([21059f5](https://github.com/pronamic/wp-pronamic-pay-adyen/commit/21059f5cbb67114c5f4fc7f99f8abcfeec758a71))
+- Added `if ( ! defined( 'ABSPATH' ) )`. ([d5d9811](https://github.com/pronamic/wp-pronamic-pay-adyen/commit/d5d9811082d39a759ed544a0558ec91c71243f79))
+- Updated .gitattributes ([5f03af2](https://github.com/pronamic/wp-pronamic-pay-adyen/commit/5f03af26b04742a92d431fee9c2fa0fe98ab6c91))
+- Translate. ([b5e0796](https://github.com/pronamic/wp-pronamic-pay-adyen/commit/b5e079659bf9c22633b81b1b7b04b8a01a0e7621))
+
+Full set of changes: [`4.5.0...4.5.1`][4.5.1]
+
+[4.5.1]: https://github.com/pronamic/wp-pronamic-pay-adyen/compare/v4.5.0...v4.5.1
+
 ## [4.5.0] - 2024-02-07
 
 ### Changed
diff --git a/package.json b/package.json
index a1c2c5f..7d5c4be 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "adyen",
-	"version": "4.5.0",
+	"version": "4.5.1",
 	"description": "Adyen driver for the WordPress payment processing library.",
 	"author": {
 		"name": "Pronamic",
diff --git a/pronamic-pay-adyen.php b/pronamic-pay-adyen.php
index 2c95206..16056f1 100644
--- a/pronamic-pay-adyen.php
+++ b/pronamic-pay-adyen.php
@@ -4,7 +4,7 @@
  * Plugin URI: https://www.pronamic.eu/plugins/pronamic-pay-adyen/
  * Description: Extend the Pronamic Pay plugin with the Adyen gateway to receive payments with Adyen through a variety of WordPress plugins.
  *
- * Version: 4.5.0
+ * Version: 4.5.1
  * Requires at least: 5.9
  * Requires PHP: 7.4
  *
diff --git a/readme.txt b/readme.txt
index e916f6a..3d6d1a6 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,6 +4,6 @@ Tags: pronamic, pay, adyen, add-on
 Requires at least: 5.9
 Tested up to: 6.0
 Requires PHP: 7.4
-Stable tag: 4.5.0
+Stable tag: 4.5.1
 
 Extend the Pronamic Pay plugin with the Adyen gateway to receive payments with Adyen through a variety of WordPress plugins.