diff --git a/requirements/tox-pin-base.txt b/requirements/tox-pin-base.txt
index 25663f48..1b87feea 100644
--- a/requirements/tox-pin-base.txt
+++ b/requirements/tox-pin-base.txt
@@ -9,4 +9,4 @@ six==1.16.0
 Tubes==0.2.1
 Werkzeug==3.0.0; python_version > '3.7'
 Werkzeug==2.1.2; python_version <= '3.7'
-zope.interface==6.0
+zope.interface==6.1