diff --git a/requirements.txt b/requirements.txt
index 902a766c0..5f28961c9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -149,7 +149,7 @@ markupsafe==2.1.1
     # via
     #   jinja2
     #   mako
-marshmallow==3.15.0
+marshmallow==3.16.0
     # via
     #   -r requirements.in
     #   flask-marshmallow