diff --git a/constraints.txt b/constraints.txt
index 7f547d7be..bd99d67d6 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -42,4 +42,4 @@ typing_extensions==4.14.0
 urllib3==2.5.0
 Werkzeug==0.16.1
 zope.event==6.0
-zope.interface==8.0
+zope.interface==8.1