diff --git a/pkgs/development/python-modules/zope_schema/default.nix b/pkgs/development/python-modules/zope_schema/default.nix
index 71e571dba336..df5322acc87f 100644
--- a/pkgs/development/python-modules/zope_schema/default.nix
+++ b/pkgs/development/python-modules/zope_schema/default.nix
@@ -9,11 +9,11 @@
 
 buildPythonPackage rec {
   pname = "zope.schema";
-  version = "4.4.2";
+  version = "4.9.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1p943jdxb587dh7php4vx04qvn7b2877hr4qs5zyckvp5afhhank";
+    sha256 = "2d971da8707cab47b1916534b9929dcd9d7f23aed790e6b4cbe3103d5b18069d";
   };
 
   propagatedBuildInputs = [ zope_location zope_event zope_interface zope_testing ];