diff --git a/ext_emconf.php b/ext_emconf.php
index fa5e8e92..2836fe6a 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -8,7 +8,7 @@
   'author_email' => 'sschreiber@pagemachine.de',
   'author_company' => 'PAGEmachine AG',
   'state' => 'alpha',
-  'version' => '3.0.4',
+  'version' => '4.0.0',
   'constraints' => [
     'depends' => [
       'typo3' => '9.5.0-10.4.99',