diff --git a/tests/requirements.txt b/tests/requirements.txt
index c97b92d..cfbef74 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,3 +1,4 @@
-aioxmpp==0.13.2
+aioxmpp==0.13.3
 pip-chill==1.0.1
-pytest-asyncio==0.18.3
+pytest-asyncio==0.21.0
+pytz==2022.7.1