diff --git a/requirements.in b/requirements.in
index d0551ac8..85236d9d 100644
--- a/requirements.in
+++ b/requirements.in
@@ -14,7 +14,7 @@ djangorestframework>=3.10.3,<3.16
 importlib-metadata==8.4.0
 jsonschema==4.23.0
 lxml==5.3.0
-marshmallow==3.21.3
+marshmallow==3.22.0
 pydantic==2.9.2
 pyOpenSSL==24.2.1
 pytz==2024.1
diff --git a/requirements.txt b/requirements.txt
index c50f6b35..b32d9694 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ lxml==5.3.0
     # via
     #   -r requirements.in
     #   signxml
-marshmallow==3.21.3
+marshmallow==3.22.0
     # via -r requirements.in
 packaging==24.1
     # via marshmallow