diff --git a/requirements.txt b/requirements.txt
index 09aa400..8ac9f38 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ click==6.7
 docopt==0.6.2
 enum-compat==0.0.2
 eventlet==0.21.0
-Flask==0.12
+Flask==1.1.1
 Flask-SocketIO==2.8.6
 Flask-WTF==0.14.2
 greenlet==0.4.12