diff --git a/requirements.txt b/requirements.txt
index 4291020478..6f8b032db5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,6 +36,7 @@ WSME>=0.8 # MIT
 Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
 taskflow>=2.7.0 # Apache-2.0
 diskimage-builder!=1.6.0,!=1.7.0,!=1.7.1,>=1.1.2 # Apache-2.0
+futures>=3.0;python_version=='2.7' or python_version=='2.6'  # BSD
 
 #for the amphora api
 Flask!=0.11,<1.0,>=0.10 # BSD