diff --git a/packages/cubby/src/server.tsx b/packages/cubby/src/server.tsx
index f50aaca..8f068cd 100644
--- a/packages/cubby/src/server.tsx
+++ b/packages/cubby/src/server.tsx
@@ -399,7 +399,7 @@ app.delete('/:id/delete/:filename', async c => {
 })
 
 export default {
-    port: 3000,
+    port: process.env.PORT || 3000,
     fetch: app.fetch,
     maxRequestBodySize: 1024 * 1024 * 1024, // 1GB
 }
\ No newline at end of file