diff --git a/Dockerfile b/Dockerfile
index 03d458c..273e267 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,5 +9,5 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
 RUN pip3 install -r requirements.txt
 
-EXPOSE 8000
-CMD ["gunicorn", "-b", "0.0.0.0:8000", "app:app"]
+EXPOSE 80
+CMD ["gunicorn", "-b", "0.0.0.0:80", "app:app"]