diff --git a/pkgs/applications/networking/instant-messengers/zulip-term/default.nix b/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
index b2f80c70d240..1775ce9a4817 100644
--- a/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
+++ b/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
@@ -29,6 +29,7 @@ python3.pkgs.buildPythonApplication rec {
     lxml
     typing-extensions
     python-dateutil
+    pytz
     tzlocal
   ];