diff --git a/requirements-app.txt b/requirements-app.txt
index ceeb9b799..cff67fa61 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -15,7 +15,7 @@ gunicorn==19.7.1  # pyup: ignore, >19.8 breaks eventlet patching
 iso8601==0.1.12
 jsonschema==3.0.1
 marshmallow-sqlalchemy==0.16.1
-marshmallow==2.19.1
+marshmallow==2.19.2
 psycopg2-binary==2.7.7
 PyJWT==1.7.1
 SQLAlchemy==1.2.18