diff --git a/chicago_traffic/requirements.txt b/chicago_traffic/requirements.txt
index ed921c4..a4cf644 100644
--- a/chicago_traffic/requirements.txt
+++ b/chicago_traffic/requirements.txt
@@ -2,7 +2,7 @@ pandas==0.22.0
 sodapy==1.4.6
 datalab==1.1.2
 google-api-python-client
-gunicorn==19.7.1
+gunicorn==22.0.0
 six==1.10
 Flask==2.3.2
 pandas-gbq==0.4.0