diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000000..372ec73e9c
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xb2d109759fe14e11ac5cc100ab6006321ebdd7ffdefbd2efac93a002105f8e92"
+  }
+}