diff --git a/requirements.txt b/requirements.txt
index 9d5f8fcc..d9d5ae05 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 setuptools<80.3
 urllib3<2.4
 zc.buildout==5.1.1
-zope.interface==6.4.post2
+zope.interface==8.1.1