diff --git a/src/MDEventsSet.php b/src/MDEventsSet.php
index 92d1e1a..330c4bb 100644
--- a/src/MDEventsSet.php
+++ b/src/MDEventsSet.php
@@ -63,7 +63,7 @@ final class MDEventsSet extends MDValueSet {
 
     ];
 
-    const EVENTS_PRODUCTION      = [1, 7, 9, 10, 19, 20, 26, 38, 39, 48];
+    const EVENTS_PRODUCTION      = [1, 7, 9, 10, 19, 20, 26, 27, 28, 38, 39, 48];
 
     // Array enthält solche Ereignisse, die nach der Herstellung passiert sein müssen
     const EVENTS_POST_PRODUCTION = [2, 3, 6, 8, 11, 13, 14, 15, 32, 34, 37, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50];