diff --git a/ch05/photolog/requirements.txt b/ch05/photolog/requirements.txt
index 37f6f05..7aab1be 100644
--- a/ch05/photolog/requirements.txt
+++ b/ch05/photolog/requirements.txt
@@ -17,5 +17,5 @@ requests-oauthlib==1.3.0
 SQLAlchemy==1.4.22
 twython==3.9.1
 urllib3==1.26.6
-Werkzeug==0.14
+Werkzeug==0.15.3
 WTForms==2.3.3