Now depends on kombu 4.0.1

requirements/default.txt

@@ -1,3 +1,3 @@
 pytz>dev
 billiard>=3.5.0.2,<3.6.0
-kombu>=4.0,<5.0
+kombu>=4.0.1,<5.0

setup.cfg

@@ -18,7 +18,7 @@ ignore = D102,D104,D203,D105,D213
 [bdist_rpm]
 requires = pytz >= 2016.7
            billiard >= 3.5.0.2
-           kombu >= 4.0.0
+           kombu >= 4.0.1
 
 [wheel]
 universal = 1