diff --git a/ChangeLog-8.5.md b/ChangeLog-8.5.md
index fbe05afa964..dc983209f5c 100644
--- a/ChangeLog-8.5.md
+++ b/ChangeLog-8.5.md
@@ -2,6 +2,12 @@
 
 All notable changes of the PHPUnit 8.5 release series are documented in this file using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
 
+## [8.5.6] - 2020-06-15
+
+### Fixed
+
+* [#4211](https://github.com/sebastianbergmann/phpunit/issues/4211): `phpdbg_*()` functions are scoped to `PHPUnit\phpdbg_*()`
+
 ## [8.5.5] - 2020-05-22
 
 ### Fixed
@@ -58,6 +64,7 @@ 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
 
+[8.5.6]: https://github.com/sebastianbergmann/phpunit/compare/8.5.5...8.5.6
 [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
diff --git a/src/Runner/Version.php b/src/Runner/Version.php
index 8e367495fb5..f9b9fbf6d1d 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('8.5.5', \dirname(__DIR__, 2)))->getVersion();
+            self::$version = (new VersionId('8.5.6', \dirname(__DIR__, 2)))->getVersion();
         }
 
         return self::$version;