diff --git a/changedetectionio/tests/smtp/test_notification_smtp.py b/changedetectionio/tests/smtp/test_notification_smtp.py
index c8bab3712..c391f5240 100644
--- a/changedetectionio/tests/smtp/test_notification_smtp.py
+++ b/changedetectionio/tests/smtp/test_notification_smtp.py
@@ -14,7 +14,7 @@ import logging
 
 
 # NOTE - RELIES ON mailserver as hostname running, see github build recipes
-smtp_test_server = 'localhost'
+smtp_test_server = 'mailserver'
 
 ALL_MARKUP_TOKENS = ''.join(f"TOKEN: '{t}'\n{{{{{t}}}}}\n" for t in NotificationContextData().keys())