diff --git a/ChangeLog-8.5.md b/ChangeLog-8.5.md
index 5e15593bc50..fbe05afa964 100644
--- a/ChangeLog-8.5.md
+++ b/ChangeLog-8.5.md
@@ -2,7 +2,7 @@
 
 All notable changes of the PHPUnit 8.5 release series are documented in this file using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
 
-## [8.5.5] - 2020-MM-DD
+## [8.5.5] - 2020-05-22
 
 ### Fixed
 
@@ -58,7 +58,7 @@ All notable changes of the PHPUnit 8.5 release series are documented in this fil
 * [#3967](https://github.com/sebastianbergmann/phpunit/issues/3967): Cannot double interface that extends interface that extends `\Throwable`
 * [#3968](https://github.com/sebastianbergmann/phpunit/pull/3968): Test class run in a separate PHP process are passing when `exit` called inside
 
-[8.5.5]: https://github.com/sebastianbergmann/phpunit/compare/8.5.4...8.5
+[8.5.5]: https://github.com/sebastianbergmann/phpunit/compare/8.5.4...8.5.5
 [8.5.4]: https://github.com/sebastianbergmann/phpunit/compare/8.5.3...8.5.4
 [8.5.3]: https://github.com/sebastianbergmann/phpunit/compare/8.5.2...8.5.3
 [8.5.2]: https://github.com/sebastianbergmann/phpunit/compare/8.5.1...8.5.2
diff --git a/src/Runner/Version.php b/src/Runner/Version.php
index ab9f227e87a..8e367495fb5 100644
--- a/src/Runner/Version.php
+++ b/src/Runner/Version.php
@@ -33,7 +33,7 @@ public static function id(): string
         }
 
         if (self::$version === '') {
-            self::$version = (new VersionId('8.5.4', \dirname(__DIR__, 2)))->getVersion();
+            self::$version = (new VersionId('8.5.5', \dirname(__DIR__, 2)))->getVersion();
         }
 
         return self::$version;