diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0dcbd2c..15173b9 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 
 # Development
 pyramid-debugtoolbar==4.3
-waitress==1.1.0
+waitress==1.4.2
 
 # Testing
 nose==1.3.7