diff --git a/apiserver/requirements.txt b/apiserver/requirements.txt
index e6141ab..1490660 100644
--- a/apiserver/requirements.txt
+++ b/apiserver/requirements.txt
@@ -18,6 +18,7 @@ packaging==20.4
 praw==6.4.0
 prawcore==1.4.0
 pyparsing==2.4.7
+pytz==2020.4
 requests==2.24.0
 six==1.15.0
 soupsieve==2.0.1