diff --git a/pkgs/development/python-modules/mechanize/default.nix b/pkgs/development/python-modules/mechanize/default.nix
index 7eb119fa9559..5309855fb49e 100644
--- a/pkgs/development/python-modules/mechanize/default.nix
+++ b/pkgs/development/python-modules/mechanize/default.nix
@@ -6,11 +6,11 @@
 
 buildPythonPackage rec {
   pname = "mechanize";
-  version = "0.4.5";
+  version = "0.4.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "6355c11141f6d4b54a17fc2106944806b5db2711e60b120d15d83db438c333fd";
+    sha256 = "d16cea241253b5eb6380bf8a46627cad91d1f2c3f93a33279a31ce276d6c5d44";
   };
 
   propagatedBuildInputs = [ html5lib ];