diff --git a/funding.json b/funding.json
new file mode 100644
index 000000000..7798d9ba2
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x48fbe63762c046fc4231f9b28791e5838b8a0e8cebf3ef02b8023b7f79a7a471"
+  }
+}