diff --git a/requirements/tox-pin-base.txt b/requirements/tox-pin-base.txt
index 36a35420..5ebb4833 100644
--- a/requirements/tox-pin-base.txt
+++ b/requirements/tox-pin-base.txt
@@ -8,5 +8,5 @@ PyHamcrest==2.1.0
 six==1.17.0
 Tubes==0.2.1
 Werkzeug==3.1.8
-zope.interface==8.0.1; python_version < '3.13'
+zope.interface==8.5; python_version < '3.13'
 zope.interface==7.2; python_version >= '3.13'