diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..1493388d
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x154a42e5ca88d7c2732fda74d6eb611057fc88dbe6f0ff3aae7b89c2cd1666ab"
+  }
+}