diff --git a/pkgs/development/python-modules/zope-size/default.nix b/pkgs/development/python-modules/zope-size/default.nix
index 32a08b5add6f..a6ef2a588550 100644
--- a/pkgs/development/python-modules/zope-size/default.nix
+++ b/pkgs/development/python-modules/zope-size/default.nix
@@ -7,11 +7,11 @@
 
 buildPythonPackage rec {
   pname = "zope.size";
-  version = "4.4";
+  version = "5.0";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-bhv3QJdZtNpyAuL6/aZXWD1Acx8661VweWaItJPpkHk=";
+    hash = "sha256-sVRT40+Bb/VFmtg82TUCmqWBxqRTRj4DxeLZe9IKQyo=";
   };
 
   propagatedBuildInputs = [ zope-i18nmessageid zope-interface ];