Correct kombu deps.
@@ -42,7 +42,7 @@ honcho==1.0.1
idna==2.8 # via cryptography, requests
itsdangerous==1.1.0 # via flask, flask-kvsession
jinja2==2.10 # via flask
-kombu==4.2.2 # via celery
+kombu==4.2.2.post1 # via celery
libsass==0.16.1
mako==1.0.7 # via alembic
markdown==3.0.1 # via flask-flatpages
