diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..9abf93bc
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xd61084147c0e08c9a304348584c6bd0e9974a4073bff55f6b1728730b6ce07f7"
+  }
+}