diff --git a/requirements.txt b/requirements.txt
index 780751d..bf4f577 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,4 +36,4 @@ venusian==3.0.0
 waitress==2.0.0
 WebOb==1.8.7
 zope.deprecation==4.4.0
-zope.interface==5.2.0
+zope.interface==5.3.0