diff --git a/requirements.txt b/requirements.txt
index 4cdb13bdb..a14b97cee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ gunicorn==19.7.1
 iso8601==0.1.12
 jsonschema==2.6.0
 marshmallow-sqlalchemy==0.13.2
-marshmallow==2.14.0
+marshmallow==2.15.0
 monotonic==1.4
 psycopg2==2.7.3.2
 PyJWT==1.5.3