diff --git a/flasky.py b/flasky.py
index de27efd..ac26e94 100644
--- a/flasky.py
+++ b/flasky.py
@@ -117,5 +117,5 @@ if config[config_name].DEBUG:
     app.config["API_DOC_MEMBER"] = ["app", "main"]
 if __name__ == '__main__':
 
-    app.run(debug=True, host='0.0.0.0')
+    app.run(debug=True, host='0.0.0.0', port=os.environ.get("PORT", 5000))