diff --git a/pkgs/development/python-modules/cytoolz/default.nix b/pkgs/development/python-modules/cytoolz/default.nix
index 512e26023c0..156cd0f5a4c 100644
--- a/pkgs/development/python-modules/cytoolz/default.nix
+++ b/pkgs/development/python-modules/cytoolz/default.nix
@@ -10,11 +10,11 @@
 
 buildPythonPackage rec {
   pname = "cytoolz";
-  version = "0.10.1";
+  version = "0.11.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0p4a9nadsy1337gy2cnb5yanbn03j3zm6d9adyqad9bk3nlbpxc2";
+    sha256 = "c64f3590c3eb40e1548f0d3c6b2ccde70493d0b8dc6cc7f9f3fec0bb3dcd4222";
   };
 
   # Extension types