diff --git a/flask-server/requirements.txt b/flask-server/requirements.txt
index ebded99..a573bdb 100644
--- a/flask-server/requirements.txt
+++ b/flask-server/requirements.txt
@@ -3,7 +3,7 @@ argon2-cffi==23.1.0
 Authlib==1.3.2
 blinker==1.8.2
 certifi==2026.7.22
-charset-normalizer==3.4.0
+charset-normalizer==3.4.9
 click==8.1.7
 colorama==0.4.6
 dnspython==2.7.0