diff --git a/mailbox-app/requirements/constraints.txt b/mailbox-app/requirements/constraints.txt
index c8bb3fe..9a40306 100644
--- a/mailbox-app/requirements/constraints.txt
+++ b/mailbox-app/requirements/constraints.txt
@@ -9,7 +9,7 @@ coverage==7.13.3
 Django==5.2.17
 filelock==3.20.3
 gunicorn==25.1.0
-packaging==26.2
+packaging==26.3
 pip-audit==2.10.0
 pycparser==3.0
 pytest==9.1.1
diff --git a/mailbox-app/requirements/locked.txt b/mailbox-app/requirements/locked.txt
index 8cf762b..29e491a 100644
--- a/mailbox-app/requirements/locked.txt
+++ b/mailbox-app/requirements/locked.txt
@@ -7,7 +7,7 @@ cffi==2.0.0
 Django==5.2.17
 filelock==3.20.3
 gunicorn==25.1.0
-packaging==26.2
+packaging==26.3
 pycparser==3.0
 python-dotenv==1.2.2
 sqlparse==0.6.0