diff --git a/requirements.txt b/requirements.txt
index b048e56..8c16af7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,4 +36,4 @@ venusian==1.2.0
 waitress==1.4.2
 WebOb==1.8.5
 zope.deprecation==4.4.0
-zope.interface==4.6.0
+zope.interface==5.0.2