diff --git a/funding.json b/funding.json
new file mode 100644
index 000000000..c2f1e14b2
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x2725d5ff44dd7e375ac3a54baa024ec90eafe91185cdc6d1b3c84256c14ff92a"
+  }
+}