diff --git a/requirements.txt b/requirements.txt
index ec1c01f..1b88be8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,4 @@ beautifulsoup4==4.9.3
 html5lib==1.1
 icalendar==4.0.7
 pelican==4.5.4
+pytz==2020.1