diff --git a/requirements.txt b/requirements.txt
index e5920125..50595f15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ six>=1.5.2,<=1.10.0
 requests>=2.2.1,<=2.9.1
 gevent>=1.0,<=1.1.0
 gevent-websocket==0.9.3
-Flask==0.10.1
+Flask==2.3.2
 Flask-WTF>=0.11,<=0.12
 wtforms>=2.0,<=2.1
 Flask-SocketIO==2.6