diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9aa653a5205..e0a2e2367a3 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -14933,11 +14933,11 @@ let
 
   toolz = buildPythonPackage rec{
     name = "toolz-${version}";
-    version = "0.7.2";
+    version = "0.7.4";
 
     src = pkgs.fetchurl{
       url = "https://pypi.python.org/packages/source/t/toolz/toolz-${version}.tar.gz";
-      md5 = "6f045541a9e7ee755b7b00fced4a7fde";
+      sha256 = "43c2c9e5e7a16b6c88ba3088a9bfc82f7db8e13378be7c78d6c14a5f8ed05afd";
     };
 
     meta = {