diff --git a/requirements.txt b/requirements.txt
index 372cc0c..535fcfe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ jsonify==0.5
 jsonschema==4.25.1
 jsonschema-specifications==2025.9.1
 MarkupSafe==3.0.3
-marshmallow==4.0.1
+marshmallow==4.1.2
 packaging==25.0
 PyJWT==2.10.1
 pymongo==4.15.3