diff --git a/pkgs/development/python-modules/plone-testing/default.nix b/pkgs/development/python-modules/plone-testing/default.nix
index fdb75e22115d..ce7f0f3ef626 100644
--- a/pkgs/development/python-modules/plone-testing/default.nix
+++ b/pkgs/development/python-modules/plone-testing/default.nix
@@ -8,11 +8,11 @@
 
 buildPythonPackage rec {
   pname = "plone.testing";
-  version = "8.0.3";
+  version = "9.0.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "39bc23bbb59b765702090ad61fe579f8bd9fe1f005f4dd1c2988a5bd1a71faf0";
+    sha256 = "sha256-xdzm4LG/W5ziYXaXbCOfQbZYZvaUUih3lWhkLzWqeUc=";
   };
 
   propagatedBuildInputs = [ six setuptools zope-testing ];