diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..998bd51
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x331511dd6300baf10a35b2d3f3953fd7160412b970049b3a63b64564ce26c347"
+  }
+}