diff --git a/requirements.txt b/requirements.txt
index fa6f294719..645c212d3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ haversine==0.4.5
 polyline==1.3.1
 websocket-client==0.37.0
 python-socketio==1.4.2
-flask==0.11.1
+flask==1.0
 socketIO_client==0.7.0
 eventlet==0.19.0
 gpxpy==1.1.1