diff --git a/requirements.txt b/requirements.txt
index ffb6abc..56113d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,8 +3,8 @@
 # process, which may cause wedges in the gate later.
 pbr>=0.6,!=0.7,<1.0
 Babel>=1.3
-cliff>=1.7.0  # Apache-2.0
-oslo.i18n>=1.3.0  # Apache-2.0
+cliff>=1.10.0,<1.11.0  # Apache-2.0
+oslo.i18n>=1.5.0,<1.6.0  # Apache-2.0
 python-keystoneclient>=1.1.0
 requests>=2.2.0,!=2.4.0
-six>=1.7.0
+six>=1.9.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 54135df..a54e910 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,7 +8,7 @@ discover
 fixtures>=0.3.14
 python-subunit>=0.0.18
 sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
-oslosphinx>=2.2.0  # Apache-2.0
+oslosphinx>=2.5.0,<2.6.0  # Apache-2.0
 testrepository>=0.0.18
 testscenarios>=0.4
 testtools>=0.9.36,!=1.2.0