diff --git a/backend/requirements.txt b/backend/requirements.txt
index 8c1e4c84..ac49db5c 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -7,7 +7,7 @@ Flask-Mailman==0.3.0
 boto3==1.26.14
 flask-redis==0.4.0
 fakeredis==2.0.0
-flask-cors==3.0.10
+flask-cors==4.0.1
 flask-misaka==1.0.0
 pyHanko==0.15.1
 PyMuPDF==1.21.0