diff --git a/ch05/photolog/requirements.txt b/ch05/photolog/requirements.txt
index 37f6f05..fa58b42 100644
--- a/ch05/photolog/requirements.txt
+++ b/ch05/photolog/requirements.txt
@@ -10,7 +10,7 @@ itsdangerous==2.0.1
 Jinja2==2.11.3
 MarkupSafe==2.0.1
 oauthlib==3.1.1
-Pillow==8.3.1
+Pillow==9.0.0
 redis==3.5.3
 requests==2.26.0
 requests-oauthlib==1.3.0