diff --git a/renovate.json b/renovate.json
index dbcd1bd..774df7e 100644
--- a/renovate.json
+++ b/renovate.json
@@ -7,7 +7,9 @@
   "customManagers": [
     {
       "customType": "regex",
-      "fileMatch": "^config/.*/kustomization.yaml$",
+      "managerFilePatterns": [
+        "/^config/.*/kustomization.yaml$/"
+      ],
       "matchStringsStrategy": "any",
       "matchStrings": [
         "https:\\/\\/github\\.com\\/(?<depName>.*?)\\/releases\\/download\\/(?<currentValue>[^\\/]+)\\/.*\\s*",