diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..adfeca44
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x4cf98b5dec7f0f51eb6b88ecb15639bafc7320bdc6e21ac443f4c58ebeb1245b"
+  }
+}
\ No newline at end of file