diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..85a148f
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x954e5341d720cd21df77d54d895d113b9ccc06269180e8ea51daeabfa67fc370"
+  }
+}