diff --git a/h5p.classes.php b/h5p.classes.php
index c628fbc..8b6357e 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -1868,7 +1868,7 @@ class H5PCore {
 
   public static $coreApi = array(
     'majorVersion' => 1,
-    'minorVersion' => 20
+    'minorVersion' => 21
   );
   public static $styles = array(
     'styles/h5p.css',