diff --git a/renovate.json b/renovate.json
index 0130605..b8b9490 100644
--- a/renovate.json
+++ b/renovate.json
@@ -3,9 +3,9 @@
   "extends": [
     "config:recommended"
   ],
-  "packageRules": {
+  "packageRules": [{
     "docker": {
       "pinDigests": true
     }
-  }
+  }]
 }