diff --git a/docker-stacks/pathdiff/containers/api/requirements.txt b/docker-stacks/pathdiff/containers/api/requirements.txt
index a6066bc2..5fb89a87 100644
--- a/docker-stacks/pathdiff/containers/api/requirements.txt
+++ b/docker-stacks/pathdiff/containers/api/requirements.txt
@@ -21,7 +21,7 @@ prompt-toolkit==3.0.19
 pycodestyle==2.7.0
 pytz==2021.1
 PyYAML==5.4.1
-redis==3.5.3
+redis==4.5.3
 six==1.15.0
 tinydb==4.5.2
 toml==0.10.2