diff --git a/requirements.txt b/requirements.txt
index a481614..2f3071b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,4 +42,4 @@ venusian==3.0.0
 waitress==1.4.4
 WebOb==1.8.6
 zope.deprecation==4.4.0
-zope.interface==5.1.2
+zope.interface==5.2.0