diff --git a/debian/rules b/debian/rules
index 532bc33632..87103d5c88 100755
--- a/debian/rules
+++ b/debian/rules
@@ -5,6 +5,7 @@
 
 override_dh_install:
 	dh_install
+	dh_systemd_enable gitlab-mailroom.service
 	dh_systemd_enable gitlab-unicorn.service
 	dh_systemd_enable gitlab-sidekiq.service
 	dh_systemd_enable gitlab-workhorse.service