diff --git a/funding.json b/funding.json
new file mode 100644
index 00000000..806bf1ad
--- /dev/null
+++ b/funding.json
@@ -0,0 +1,5 @@
+{
+  "opRetro": {
+    "projectId": "0x6f8f610667400044907494c879b717e806a03bf519dcfd786edc7f2fa61d6db8"
+  }
+}