diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ef1cdf..f052915 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 
 ## [Unreleased]
+
+
+## [1.5.0] - 2023-06-26
 ### Added
 * Allow users to supply their own custom HTTP client to the `Translator` object, in order to configure timeouts, security features etc more granularly.
   * Thanks to [VincentLanglet](https://github.com/VincentLanglet) for the good input and work in [#22](https://github.com/DeepLcom/deepl-php/pull/22)
@@ -107,7 +110,8 @@ Stable release.
 Initial version.
 
 
-[Unreleased]: https://github.com/DeepLcom/deepl-php/compare/v1.4.0...HEAD
+[Unreleased]: https://github.com/DeepLcom/deepl-php/compare/v1.5.0...HEAD
+[1.5.0]: https://github.com/DeepLcom/deepl-php/compare/v1.4.0...v1.5.0
 [1.4.0]: https://github.com/DeepLcom/deepl-php/compare/v1.3.0...v1.4.0
 [1.3.0]: https://github.com/DeepLcom/deepl-php/compare/v1.2.1...v1.3.0
 [1.2.1]: https://github.com/DeepLcom/deepl-php/compare/v1.2.0...v1.2.1
diff --git a/VERSION b/VERSION
index 88c5fb8..bc80560 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.0
+1.5.0
diff --git a/src/Translator.php b/src/Translator.php
index fcc6f00..4a46c3d 100644
--- a/src/Translator.php
+++ b/src/Translator.php
@@ -17,7 +17,7 @@ class Translator
     /**
      * Library version.
      */
-    public const VERSION = '1.4.0';
+    public const VERSION = '1.5.0';
 
     /**
      * Implements all HTTP requests and retries.