diff --git a/src/ch4-first-site/final/pypi/setup.py b/src/ch4-first-site/final/pypi/setup.py
index e8ebb41..d6adadd 100644
--- a/src/ch4-first-site/final/pypi/setup.py
+++ b/src/ch4-first-site/final/pypi/setup.py
@@ -13,7 +13,7 @@
     'pyramid==2.0.2',
     'pyramid_chameleon==0.3',
     'pyramid_debugtoolbar==4.10',
-    'waitress==2.1.2',
+    'waitress==3.0.1',
 ]
 
 tests_require = [