diff --git a/pyramid/pyramidsite/requirements.txt b/pyramid/pyramidsite/requirements.txt
index 31f33d4..f372400 100644
--- a/pyramid/pyramidsite/requirements.txt
+++ b/pyramid/pyramidsite/requirements.txt
@@ -16,5 +16,5 @@ venusian==3.1.1
 waitress==3.0.2
 WebOb==1.8.9
 zope.deprecation==6.0
-zope.interface==8.3
+zope.interface==8.4
 psycopg2==2.9.12