diff --git a/renovate.json b/renovate.json
index 5db72dd..4edac3f 100644
--- a/renovate.json
+++ b/renovate.json
@@ -2,5 +2,13 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:recommended"
+  ],
+  "regexManagers": [
+    {
+      "fileMatch": ["^Dockerfile$"],
+      "matchStrings": ["ARG JSONNET_VERSION=(?<currentValue>.*?)\\n"],
+      "datasourceTemplate": "github-releases",
+      "depNameTemplate": "google/go-jsonnet"
+    }
   ]
 }