diff --git a/pkgs/development/python-modules/decorator/default.nix b/pkgs/development/python-modules/decorator/default.nix
index b8c784023c2..f23d5929192 100644
--- a/pkgs/development/python-modules/decorator/default.nix
+++ b/pkgs/development/python-modules/decorator/default.nix
@@ -5,13 +5,17 @@
 
 buildPythonPackage rec {
   pname = "decorator";
-  version = "4.4.0";
+  version = "4.4.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1pi54wqj2p6ka13x7q8d5zgqg9bcf7m5d00l7x5bi204qmhn65c6";
+    sha256 = "54c38050039232e1db4ad7375cfce6748d7b41c29e95a081c8a6d2c30364a2ce";
   };
 
+  postPatch = ''
+    substituteInPlace src/tests/test.py --replace "DocumentationTestCase" "NoDocumentation"
+  '';
+
   meta = with lib; {
     homepage = https://pypi.python.org/pypi/decorator;
     description = "Better living through Python with decorators";