diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..b98e32c
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x6e250ff96f9c00b664d519d20531150df875dff20efcd37de2738f8b3286e7f6"
+  }
+}