diff --git a/.env.example b/.env.example
index dd5d1c2..b73c9e7 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,4 @@
 STRIPE_SECRET_KEY=
 STRIPE_WEBHOOK_SECRET=
 WEBHOOK_URL=
+PORT=
diff --git a/index.js b/index.js
index da854ec..f1b0778 100644
--- a/index.js
+++ b/index.js
@@ -6,6 +6,7 @@ const app = express();
 
 const webhookSecret = process.env.STRIPE_WEBHOOK_SECRET;
 const webhookUrl = process.env.WEBHOOK_URL;
+const port = process.env.PORT;
 
 const sendToDiscord = (message) => {
   const discordPayload = {
@@ -37,4 +38,4 @@ app.post(
   }
 );
 
-app.listen(4242, () => console.log("Running on port 4242"));
+app.listen(port, () => console.log(`Running on port ${port}`));