diff --git a/funding.json b/funding.json
new file mode 100644
index 000000000..78db9e972
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x79196c0af1a1f78fe5a009a4753c46d2271b17fc2836e1f6635822f8f4cb3b61"
+  }
+}