diff --git a/src/index.ts b/src/index.ts
index c706abb..883b92d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -33,6 +33,7 @@ let server;
 
 if (isProd) {
   server = serve({
+    port: process.env.PORT ? Number(process.env.PORT) : 3000,
     routes: {
       ...apiRoutes,
       "/*": async req => {
@@ -47,6 +48,7 @@ if (isProd) {
 } else {
   const index = (await import("./index.html")).default;
   server = serve({
+    port: process.env.PORT ? Number(process.env.PORT) : 3000,
     routes: {
       "/*": index,
       ...apiRoutes,