diff --git a/version.php b/version.php
index da51ae705e5ae..f965c5fc7853c 100644
--- a/version.php
+++ b/version.php
@@ -30,10 +30,10 @@
 // between betas, final and RCs. This is _not_ the public version number. Reset minor/patchlevel
 // when updating major/minor version number.
 
-$OC_Version = [21, 0, 3, 1];
+$OC_Version = [21, 0, 4, 0];
 
 // The human readable string
-$OC_VersionString = '21.0.3';
+$OC_VersionString = '21.0.4 RC1';
 
 $OC_VersionCanBeUpgradedFrom = [
 	'nextcloud' => [