diff --git a/Dockerfile b/Dockerfile
index 3b6ed31..4b015d1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,8 +12,8 @@ RUN npm install --omit=dev
 COPY . .
 
 # 3) Variables y puerto
-ENV PORT=4000
-EXPOSE 4000
+ENV PORT=3000
+EXPOSE 3000
 
 # 4) Arranque
 CMD ["node", "index.js"]