diff --git a/Documentation/Settings.yml b/Documentation/Settings.yml
index 4446c3c..bffd84c 100644
--- a/Documentation/Settings.yml
+++ b/Documentation/Settings.yml
@@ -6,8 +6,8 @@
 conf.py:
   copyright: 2019
   project: generic_gallery
-  version: 3.0.0
-  release: 3.0.0
+  version: 4.0.0
+  release: 4.0.0
   intersphinx_mapping:
     restdoc:
     - http://docs.typo3.org/typo3cms/extensions/restdoc/
diff --git a/ext_emconf.php b/ext_emconf.php
index 7799822..4c4767e 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -19,7 +19,7 @@
     'state' => 'stable',
     'uploadfolder' => '1',
     'clearCacheOnLoad' => 1,
-    'version' => '3.0.1-dev',
+    'version' => '4.0.0',
     'constraints' => [
         'depends' => [
             'php' => '7.0.0-7.2.99',