diff --git a/renovate.json b/renovate.json
index 837008f..c77a9f9 100644
--- a/renovate.json
+++ b/renovate.json
@@ -1,12 +1,11 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "regexManagers": [
+  "customManagers": [
     {
+      "customType": "regex",
       "description": "Track ntfy binary in COPY --from",
-      "fileMatch": ["^Dockerfile$"],
-      "matchStrings": [
-        "COPY --from=binwiederhier/ntfy:(?<currentValue>[^\\s]+)"
-      ],
+      "managerFilePatterns": ["/^Dockerfile$/"],
+      "matchStrings": ["COPY --from=binwiederhier/ntfy:(?<currentValue>[^\\s]+)"],
       "depNameTemplate": "binwiederhier/ntfy",
       "datasourceTemplate": "docker"
     }