diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..3d91721
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xf6ab5ce1bb1cade3c885b0668addb79ea8997b6dd2b106e95ef1ada65d6f10b7"
+  }
+}