diff --git a/funding.json b/funding.json
new file mode 100644
index 0000000..b4dc16e
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x46cd8d30b17201a2c573336842ad0e4ee866eb51d885027efe9dff78bff1c086"
+  }
+}