diff --git a/platypush/message/event/mail.py b/platypush/message/event/mail.py
index 7d5edea8..b4268f6a 100644
--- a/platypush/message/event/mail.py
+++ b/platypush/message/event/mail.py
@@ -1,4 +1,4 @@
-from typing import Optional, Dict
+from typing import Optional
 
 from platypush.message.event import Event
 from platypush.plugins.mail import Mail