diff --git a/requirements-xmpp.txt b/requirements-xmpp.txt
index a910d94..81e651a 100644
--- a/requirements-xmpp.txt
+++ b/requirements-xmpp.txt
@@ -1,3 +1,4 @@
 python-dateutil==2.8.1
 requests==2.24.0
 xmpppy==0.6.1
+pytz==2021.1