diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..9e4d335
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0xb11ee90652aca0a437820f205bb545dbdf1ab14b99f8f63a76e50a5d57ef2520"
+  }
+}