diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..1b098ec
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x61d2e05f988e678b240a7f00c5f722a5a69f06f085f4ff33199e835a46949469"
+  }
+}