diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..f923c00a
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xda023a3af1b97a8100fddf653cfcb22263384b353a5b129845a04dbea4652d07"
+  }
+}