diff --git a/pkgs/development/python-modules/toolz/default.nix b/pkgs/development/python-modules/toolz/default.nix
index e0039057d828..6100d2a7c53d 100644
--- a/pkgs/development/python-modules/toolz/default.nix
+++ b/pkgs/development/python-modules/toolz/default.nix
@@ -6,18 +6,16 @@
 
 buildPythonPackage rec {
   pname = "toolz";
-  version = "0.10.0";
+  version = "0.11.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "08fdd5ef7c96480ad11c12d472de21acd32359996f69a5259299b540feba4560";
+    sha256 = "1grz3zvw5ixwqqlbv0n7j11mlcxb66cirh5i9x9zw8kqy0hpk967";
   };
 
   checkInputs = [ nose ];
 
   checkPhase = ''
-    # https://github.com/pytoolz/toolz/issues/357
-    rm toolz/tests/test_serialization.py
     nosetests toolz/tests
   '';