diff --git a/funding.json b/funding.json
new file mode 100644
index 000000000..7c588d1ca
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x1c33980ce1d1290b5300719114dbe2cade0b820cb2b45321b715fd53d7abc8d2"
+  }
+}