diff --git a/src/publishers/requirements.txt b/src/publishers/requirements.txt
index 5d0b44445..cb0b29571 100644
--- a/src/publishers/requirements.txt
+++ b/src/publishers/requirements.txt
@@ -4,7 +4,7 @@ Flask-Cors==4.0.1
 Flask-RESTful==0.3.10
 gevent==24.2.1
 gunicorn==22.0.0
-marshmallow==3.21.2
+marshmallow==3.21.3
 marshmallow-enum==1.5.1
 oauth2client==4.1.3
 paramiko==3.4.0