diff --git a/bundles/postfix/metadata.py b/bundles/postfix/metadata.py
index 91cf74a..baeab2d 100644
--- a/bundles/postfix/metadata.py
+++ b/bundles/postfix/metadata.py
@@ -22,4 +22,9 @@ defaults = {
             },
         },
     },
+    'letsencrypt': {
+        'reload_after': {
+            'postfix',
+        },
+    },
 }