diff --git a/renovate.json b/renovate.json
index 7041178..d04175d 100644
--- a/renovate.json
+++ b/renovate.json
@@ -4,8 +4,8 @@
     {
       "customType": "regex",
       "description": "Detect ARG VERSION pin for jcabillot/phpapache base image",
-      "fileMatch": [
-        "^Dockerfile$"
+      "managerFilePatterns": [
+        "/^Dockerfile$/"
       ],
       "matchStrings": [
         "ARG\\s+VERSION=\"(?<currentValue>[^\"]+)\""