diff --git a/renovate.json b/renovate.json
index b8b9490..cabae70 100644
--- a/renovate.json
+++ b/renovate.json
@@ -3,9 +3,12 @@
   "extends": [
     "config:recommended"
   ],
-  "packageRules": [{
-    "docker": {
+  "packageRules": [
+    {
+      "matchCategories": [
+        "docker"
+      ],
       "pinDigests": true
     }
-  }]
+  ]
 }