diff --git a/requirements.txt b/requirements.txt
index f4533f5..4e9ecc5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -109,7 +109,7 @@ Unidecode==0.4.19
 urllib3==1.16
 uWSGI==2.0.13.1
 virtualenv==12.1.1
-waitress==0.9.0
+waitress==1.4.0
 WebOb==1.6.1
 WebTest==2.0.20
 xmltodict==0.9.2