diff --git a/bundles/opendkim/metadata.py b/bundles/opendkim/metadata.py
index 2d65a1f..d002d8e 100644
--- a/bundles/opendkim/metadata.py
+++ b/bundles/opendkim/metadata.py
@@ -85,7 +85,7 @@ def dns(metadata):
     for domain, keys in metadata.get('opendkim/keys').items():
         raw_key = keys['public'].replace('ssh-rsa ', '')
         dns[f'mail._domainkey.{domain}'] = {
-            'TXT': f'v=DKIM1; k=rsa; p={raw_key}',
+            'TXT': [f'v=DKIM1; k=rsa; p={raw_key}'],
         }
     
     return {