diff --git a/appengine/standard_python3/bundled-services/mail/django/requirements.txt b/appengine/standard_python3/bundled-services/mail/django/requirements.txt
index bdd07a4620..d5731eb886 100644
--- a/appengine/standard_python3/bundled-services/mail/django/requirements.txt
+++ b/appengine/standard_python3/bundled-services/mail/django/requirements.txt
@@ -1,4 +1,4 @@
-Django==5.1.13; python_version >= "3.10"
+Django==5.1.15; python_version >= "3.10"
 Django==4.2.16; python_version >= "3.8" and python_version < "3.10"
 Django==3.2.25; python_version < "3.8"
 django-environ==0.10.0