Configure Renovate.
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..a92866a
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,6 @@
+{ "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+, "extends":
+  [ "local>mulk/renovate-config"
+  , ":automergePatch"
+  ]
+}