diff --git a/requirements.txt b/requirements.txt
index e87080e..17dfc84 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ pyramid==1.5.7
 pyramid_chameleon==0.3
 pyramid_mako==1.0
 pyramid-debugtoolbar==4.9
-waitress==0.8.10
+waitress==1.4.3
 dogpile.cache==0.5.6
 pylibmc==1.5.0
 Babel==2.0