diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..22f7219d
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x79e8bf2d699790b563aa57fd34da1722bea3191ab5ff0601ba56020687702ab9"
+  }
+}