diff --git a/backend/requirements.txt b/backend/requirements.txt
index a046d452..69a77b1f 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -6,7 +6,7 @@ requests==2.32.3
 Flask-Mailman==1.1.1
 boto3==1.37.8
 flask-redis==0.4.0
-flask-cors==5.0.1
+flask-cors==6.0.0
 flask-misaka==1.0.1
 reportlab==4.3.1
 pyHanko==0.25.3