diff --git a/backend/requirements.txt b/backend/requirements.txt
index 35e10775..b9b14c99 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -2,7 +2,7 @@
 alembic==1.0.10
 SQLAlchemy==1.3.3
 werkzeug==0.15.4
-flask==1.0.3
+flask==1.1.1
 flask-socketio==4.0.0
 flask-restplus==0.12.1
 flask-cors==3.0.7