diff --git a/requirements.txt b/requirements.txt
index 4045b0a..468dffc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -68,7 +68,7 @@ SQLAlchemy==1.2.6
 testing.postgresql==1.3.0
 traitlets==4.3.2
 urllib3==1.22
-waitress==1.1.0
+waitress==1.4.1
 wcwidth==0.1.7
 eth-account==0.2.2
 web3==4.2.0