diff --git a/pkgs/development/python-modules/pgcli/default.nix b/pkgs/development/python-modules/pgcli/default.nix
index e82958ce3268..0209024ce69d 100644
--- a/pkgs/development/python-modules/pgcli/default.nix
+++ b/pkgs/development/python-modules/pgcli/default.nix
@@ -18,6 +18,7 @@
   setuptools,
   sshtunnel,
   mock,
+  tzlocal,
 }:
 
 # this is a pythonPackage because of the ipython line magics in pgcli.magic
@@ -47,6 +48,7 @@ buildPythonPackage rec {
     keyring
     pendulum
     sshtunnel
+    tzlocal
   ];
 
   nativeCheckInputs = [