diff --git a/requirements.txt b/requirements.txt
index 8b572c8a..413f5ebb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ et-xmlfile==1.1.0
     # via openpyxl
 lxml==5.3.0
     # via python-docx
-marshmallow==3.21.3
+marshmallow==3.22.0
     # via maus
 maus==0.6.0
     # via kohlrahbi (pyproject.toml)