diff --git a/requirements.txt b/requirements.txt
index f223b1a..3b90104 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ Flask-Cors==4.0.0
 Flask-Limiter==4.1.1
 Flask-Session==0.8.0
 gunicorn==25.1.0
-marshmallow==3.21.0
+marshmallow==4.2.2
 openpyxl==3.1.5
 Pillow==12.1.1
 idna==3.11