diff --git a/pkgs/development/python-modules/cx_freeze/default.nix b/pkgs/development/python-modules/cx_freeze/default.nix
index c3c3618033ed..b6edb2ced1f2 100644
--- a/pkgs/development/python-modules/cx_freeze/default.nix
+++ b/pkgs/development/python-modules/cx_freeze/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "cx_Freeze";
-  version = "6.5.3";
+  version = "6.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "e0d03cabcdf9b9c21354807ed9f06fa9481a8fd5a0838968a830f01a70820ff1";
+    sha256 = "c4af8ad3f7e7d71e291c1dec5d0fb26bbe92df834b098ed35434c901fbd6762f";
   };
 
   disabled = pythonOlder "3.5";