diff --git a/pkgs/development/python-modules/cot/default.nix b/pkgs/development/python-modules/cot/default.nix
index a6de8321dc0..607057b73f2 100644
--- a/pkgs/development/python-modules/cot/default.nix
+++ b/pkgs/development/python-modules/cot/default.nix
@@ -1,13 +1,12 @@
 { lib, stdenv, buildPythonPackage, fetchPypi, pythonOlder, isPy3k
-, argcomplete, colorlog, pyvmomi, requests, verboselogs
+, colorlog, pyvmomi, requests, verboselogs
 , psutil, pyopenssl, setuptools
-, mock, pytest, pytest-mock, pytestCheckHook, qemu
+, mock, pytest-mock, pytestCheckHook, qemu
 }:
 
 buildPythonPackage rec {
   pname = "cot";
   version = "2.2.1";
-
   disabled = !isPy3k;
 
   src = fetchPypi {