diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..5bb84d1
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x07222a857f4522026d91faec337e3cb8cf6ec5f7afb823e0742e1a6c398b81ff"
+  }
+}