diff --git a/backend/requirements.txt b/backend/requirements.txt
index f3ce1d5..12ce34e 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -14,7 +14,7 @@ redis==5.2.1
 celery==5.5.1
 click==8.1.3
 pycryptodomex==3.22.0
-marshmallow==3.21.2
+marshmallow==4.0.0
 pyjwt[crypto]==2.8.0
 bcrypt==4.1.1
 itsdangerous==2.2.0
diff --git a/requirements.txt b/requirements.txt
index f3ce1d5..12ce34e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ redis==5.2.1
 celery==5.5.1
 click==8.1.3
 pycryptodomex==3.22.0
-marshmallow==3.21.2
+marshmallow==4.0.0
 pyjwt[crypto]==2.8.0
 bcrypt==4.1.1
 itsdangerous==2.2.0