diff --git a/Procfile b/Procfile
index 1142800..2a0bb19 100644
--- a/Procfile
+++ b/Procfile
@@ -1 +1 @@
-web: yarn back start
+web: PORT=$PORT yarn back start
diff --git a/back/config/server.js b/back/config/server.js
index ac6875c..6c4af49 100644
--- a/back/config/server.js
+++ b/back/config/server.js
@@ -1,4 +1,4 @@
 module.exports = ({ env }) => ({
   host: env("HOST", "0.0.0.0"),
-  port: env.int("PORT", 443),
+  port: env.int("PORT", 1337),
 });