diff --git a/pkgs/development/python-modules/cytoolz/default.nix b/pkgs/development/python-modules/cytoolz/default.nix
index bb345ddc48ea..f95da9b75b22 100644
--- a/pkgs/development/python-modules/cytoolz/default.nix
+++ b/pkgs/development/python-modules/cytoolz/default.nix
@@ -10,22 +10,13 @@
 
 buildPythonPackage rec {
   pname = "cytoolz";
-  version = "0.9.0.1";
+  version = "0.10.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "84cc06fa40aa310f2df79dd440fc5f84c3e20f01f9f7783fc9c38d0a11ba00e5";
+    sha256 = "ed9f6a07c2bac70d6c597df360d0666d11d2adc90141d54c5c2db08b380a4fac";
   };
 
-  patches = [
-    # temporal fix for a test failure: https://github.com/pytoolz/cytoolz/issues/122
-    (fetchpatch {
-      name = "py37.patch";
-      url = https://salsa.debian.org/python-team/modules/python-cytoolz/raw/5ce4158deefc47475d1e76813f900e6c72ddcc6e/debian/patches/py37.patch;
-      sha256 = "1z29y7s5n751q3f74r3bz0f48yg6izvi68hc4pkwcalxmkq5r1n9";
-    })
-  ];
-
   # Extension types
   disabled = isPyPy;