diff --git a/renovate.json b/renovate.json
index 2451e710..39fc1351 100644
--- a/renovate.json
+++ b/renovate.json
@@ -17,9 +17,11 @@
       "matchPackageNames": ["*"]
     },
     {
-      "matchDatasources": ["docker"],
+      "matchManagers": ["dockerfile"],
+      "matchUpdateTypes": ["digest"],
       "pinDigests": true,
-      "commitMessage": "chore(docker): pin digests",
+      "commitMessagePrefix": "chore(docker):",
+      "commitMessageAction": "pin digests",
       "groupName": "docker pin digests",
       "groupSlug": "docker-all-digests"
     }