diff --git a/pkgs/development/python-modules/werkzeug/default.nix b/pkgs/development/python-modules/werkzeug/default.nix
index 7d9d55ec884..5e0d6df0af0 100644
--- a/pkgs/development/python-modules/werkzeug/default.nix
+++ b/pkgs/development/python-modules/werkzeug/default.nix
@@ -1,18 +1,20 @@
 { stdenv, buildPythonPackage, fetchPypi
 , itsdangerous, hypothesis
-, pytest, requests }:
+, pytest, requests
+, pytest-timeout
+ }:
 
 buildPythonPackage rec {
   pname = "Werkzeug";
-  version = "0.16.0";
+  version = "0.16.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "7280924747b5733b246fe23972186c6b348f9ae29724135a6dfc1e53cea433e7";
+    sha256 = "b353856d37dec59d6511359f97f6a4b2468442e454bd1c98298ddce53cac1f04";
   };
 
   propagatedBuildInputs = [ itsdangerous ];
-  checkInputs = [ pytest requests hypothesis ];
+  checkInputs = [ pytest requests hypothesis pytest-timeout ];
 
   checkPhase = ''
     pytest ${stdenv.lib.optionalString stdenv.isDarwin "-k 'not test_get_machine_id'"}