diff --git a/plinth/modules/email/__init__.py b/plinth/modules/email/__init__.py
index a06a7f2ed..b8de9b7a7 100644
--- a/plinth/modules/email/__init__.py
+++ b/plinth/modules/email/__init__.py
@@ -52,7 +52,7 @@ class EmailApp(plinth.app.App):
 
     app_id = 'email'
 
-    _version = 8
+    _version = 9
 
     def __init__(self) -> None:
         """Initialize the email app."""