diff --git a/setup.py b/setup.py
index 0ca3348..c4c3a97 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 
 pyramid_extras = {
     "pyramid<3",
-    "waitress<2.1",
+    "waitress<2.2",
 } | trigger_extras
 
 wsgi_extras = trigger_extras