diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..1a59d5d8
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x6c7990e08e4fbbb37b7df628116d66e53a14dcc3328bbf124be3245bca366068"
+  }
+}