diff --git a/version.php b/version.php
index 351f87e6131..c60039b4540 100644
--- a/version.php
+++ b/version.php
@@ -29,15 +29,15 @@
 // between betas, final and RCs. This is _not_ the public version number. Reset minor/patchlevel
 // when updating major/minor version number.
 
-$OC_Version = [19, 0, 0, 9];
+$OC_Version = [20, 0, 0, 0];
 
 // The human readable string
-$OC_VersionString = '19.0.0 RC1';
+$OC_VersionString = '20.0.0 alpha';
 
 $OC_VersionCanBeUpgradedFrom = [
 	'nextcloud' => [
-		'18.0' => true,
 		'19.0' => true,
+		'20.0' => true,
 	],
 	'owncloud' => [
 	],