diff --git a/Procfile b/Procfile
index 6fc31d1..972abcf 100644
--- a/Procfile
+++ b/Procfile
@@ -1,3 +1,3 @@
-web: ./target/release/codigocomentado
+web: ROCKET_PORT=$PORT ./target/release/codigocomentado
 
 release: ./target/release/diesel migration run