diff --git a/codelabs/flex_and_vision/requirements.txt b/codelabs/flex_and_vision/requirements.txt
index 31fcfde2839..ba6168c0423 100644
--- a/codelabs/flex_and_vision/requirements.txt
+++ b/codelabs/flex_and_vision/requirements.txt
@@ -1,5 +1,5 @@
 Flask==1.1.1
-gunicorn==20.0.4
+gunicorn==22.0.0
 google-cloud-vision==0.41.0
 google-cloud-storage==1.23.0
 google-cloud-datastore==1.10.0