diff --git a/requirements-app.txt b/requirements-app.txt
index 252e5577e..32d2aad27 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -15,7 +15,7 @@ gunicorn==20.0.4
 iso8601==0.1.12
 itsdangerous==1.1.0
 jsonschema==3.2.0
-marshmallow-sqlalchemy==0.21.0
+marshmallow-sqlalchemy==0.22.2
 marshmallow==2.20.2 # pyup: <3 # v3 throws errors
 psycopg2-binary==2.8.4
 PyJWT==1.7.1