diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..668d358
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xe434930e189c807b137ff0d8e2fa6a95eaa57dde574143a02ca0d7fb31a40bea"
+  }
+}