diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..c95224c
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x5b054742b09f8ce4092a15700ef9781520a6ff2928ba5ee09c78ad4dd8817b85"
+  }
+}