diff --git a/requirements.txt b/requirements.txt
index 34d242e..46eac6a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ isodate==0.6.0
 tornado==4.5.3
 
 # pip install redis
-redis==3.3.11
+redis==4.4.4
 
 # misc
 pretty-errors==1.2.19