diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..93aaa43
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x08df6e20a3cfabbaf8f34d4f4d048fe7da40447c24be0f3ad513db6f13c755dd"
+  }
+}