diff --git a/flask/requirements.txt b/flask/requirements.txt
index ae563bd..124e307 100644
--- a/flask/requirements.txt
+++ b/flask/requirements.txt
@@ -4,4 +4,4 @@ Flask-SQLAlchemy==2.3.2
 psycopg2-binary==2.7.7
 Flask-Caching==1.7.2
 gunicorn==19.9.0
-redis==3.1.0
+redis==4.4.4