diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000000..6d320160b3
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,22 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended",
+    ":semanticCommits",
+    ":semanticCommitTypeAll(chore)",
+    ":semanticCommitScope(deps)",
+    "group:allNonMajor",
+    "schedule:earlyMondays"
+  ],
+  "packageRules": [
+    {
+      "matchPackageNames": ["jbr", "ktfmt", "golangci-lint"],
+      "matchManagers": ["hermit"],
+      "enabled": false
+    },
+    {
+      "matchFileNames": ["**/testdata/**/go.mod"],
+      "enabled": false
+    }
+  ]
+}
diff --git a/renovate.json5 b/renovate.json5
deleted file mode 100644
index ba70e46828..0000000000
--- a/renovate.json5
+++ /dev/null
@@ -1,18 +0,0 @@
-{
-  $schema: "https://docs.renovatebot.com/renovate-schema.json",
-  extends: [
-    "config:recommended",
-    ":semanticCommits",
-    ":semanticCommitTypeAll(chore)",
-    ":semanticCommitScope(deps)",
-    "group:allNonMajor",
-    "schedule:earlyMondays", // Run once a week.
-  ],
-  packageRules: [
-    {
-      matchPackageNames: ["jbr", "ktfmt", "golangci-lint"],
-      matchManagers: ["hermit"],
-      enabled: false,
-    },
-  ],
-}