diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..98caf267
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x30769523b16315b6404ce3c6dbaf610028acdf3133dca8a4d427e0d19d3628c9"
+  }
+}