Now depends on Kombu 2.0 from git master

requirements/default.txt

@@ -1,3 +1,3 @@
 python-dateutil>=1.5.0,<2.0.0
 anyjson>=0.3.1
-kombu>=1.4.3,<3.0.0
+kombu>=2.0.0rc1,<3.0

setup.py

@@ -115,7 +115,7 @@ except ImportError:
     install_requires.append("importlib")
 install_requires.extend([
     "anyjson>=0.3.1",
-    "kombu>=1.4.3,<3.0.0",
+    "kombu>=2.0.0rc1,<3.0",
 ])
 if is_py3k:
     install_requires.append("python-dateutil>=2.0.0")