diff --git a/requirements.txt b/requirements.txt
index 5729db9..3ba065f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ git+https://github.com/adsabs/ADSMicroserviceUtils.git@v1.1.9
 Flask-WTF==0.14.3
 Jinja2==2.11.3
 Flask-Minify==0.27
-redis==3.5.3
+redis==4.5.3
 Flask-Limiter==1.4
 dnspython3==1.15.0
 fakeredis==1.4.3