diff --git a/requirements.txt b/requirements.txt
index 84bbcb32d1..20c4793c16 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ django-babel>=0.5.1 # BSD
 django-compressor>=2.0 # MIT
 django-openstack-auth>=3.1.0 # Apache-2.0
 django-pyscss>=2.0.2 # BSD License (2 clause)
-futurist>=0.11.0,!=0.15.0  # Apache-2.0
+futurist!=0.15.0,>=0.11.0 # Apache-2.0
 iso8601>=0.1.11 # MIT
 netaddr!=0.7.16,>=0.7.13 # BSD
 oslo.concurrency>=3.8.0 # Apache-2.0