diff --git a/requirements.txt b/requirements.txt
index 7c94b4c25..023900898 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -167,5 +167,5 @@ typing_extensions==4.9.0
 tzdata==2023.3
 wrapt==1.17.2
 zipp==3.19.2
-zope.event==5.0
+zope.event==5.1.1
 zope.interface==5.4.0