diff --git a/carddav.php b/carddav.php
index e931d491..a9778b78 100644
--- a/carddav.php
+++ b/carddav.php
@@ -46,7 +46,7 @@ class carddav extends rcube_plugin implements RcmInterface
      *
      * During development, it is set to the last release and added the suffix +dev.
      */
-    public const PLUGIN_VERSION = 'v5.0.1+dev';
+    public const PLUGIN_VERSION = 'v5.1.0';
 
     /**
      * Information about this plugin that is queried by roundcube.