diff --git a/requirements.txt b/requirements.txt
index c8fe0ec5..3ab776bd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ gunicorn>=19.9.0
 itsdangerous>=1.1.0
 Jinja2>=2.10.1
 MarkupSafe>=1.1.1
-marshmallow>=2.19.2
+marshmallow>=3.10.0
 numpy>=1.17.0
 pillow>=6.2.0
 protobuf>=3.8.0