diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..0986c49
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xe40733f18903b26f7880bb2fd78c39f3992efe9f8b2e89994c2869eeb3ba4470"
+  }
+}