diff --git a/auctioning_platform/requirements.txt b/auctioning_platform/requirements.txt
index 321a72b7..2ad4c343 100644
--- a/auctioning_platform/requirements.txt
+++ b/auctioning_platform/requirements.txt
@@ -31,7 +31,7 @@ injector==0.18.4          # via -r ./auctions/requirements.txt, -r ./auctions_in
 itsdangerous==1.1.0       # via flask, flask-security, flask-wtf
 jinja2==2.11.3            # via flask, flask-babelex
 markupsafe==1.1.1         # via jinja2, wtforms
-marshmallow-dataclass==8.1.0  # via -r ./web_app/requirements.txt
+marshmallow-dataclass==8.4.2  # via -r ./web_app/requirements.txt
 marshmallow==3.10.0        # via -r ./web_app/requirements.txt, marshmallow-dataclass
 mypy-extensions==0.4.3    # via typing-inspect
 packaging==20.4           # via pytest
diff --git a/auctioning_platform/web_app/requirements.txt b/auctioning_platform/web_app/requirements.txt
index d4b43c3d..9da3ec03 100644
--- a/auctioning_platform/web_app/requirements.txt
+++ b/auctioning_platform/web_app/requirements.txt
@@ -5,6 +5,6 @@ Flask-Injector==0.12.0
 Flask==1.1.2
 bcrypt==3.1.7
 marshmallow==3.10.0
-marshmallow-dataclass==8.1.0
+marshmallow-dataclass==8.4.2
 Flask-Login==0.5.0
 SQLAlchemy==1.3.19