diff --git a/tools/pip-requires b/tools/pip-requires
index 0b7f1da2..11cd83bd 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -1,5 +1,5 @@
 argparse
 httplib2
 iso8601>=0.1.4
-prettytable>=0.5,<0.7
+prettytable>=0.6,<0.8
 python-keystoneclient>=0.2,<0.3