diff --git a/requirements.txt b/requirements.txt
index 61390b6c4..682867850 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,8 +12,7 @@ marshmallow-sqlalchemy==0.8.0
 flask-marshmallow==0.6.2
 Flask-Bcrypt==0.6.2
 boto3==1.4.4
-celery==3.1.25 # pyup: <4
-monotonic==1.2
+monotonic==1.3
 statsd==3.2.1
 jsonschema==2.5.1
 gunicorn==19.6.0