diff --git a/mailu/Chart.yaml b/mailu/Chart.yaml
index 32238000f3e328a30149a1782db672a96373b143..b846d2839d721dcd030f038f72a3131fafd6fe9d 100644
--- a/mailu/Chart.yaml
+++ b/mailu/Chart.yaml
@@ -3,4 +3,4 @@ name: mailu
 description: Helm Chart for Mailu
 type: application
 version: 1.3.7
-appVersion: "1.9.26"
+appVersion: "1.9.28"