diff --git a/requirements.txt b/requirements.txt
index 4b398466..4f26b920 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 cmd2>=0.6.7 # MIT
 PrettyTable<0.8,>=0.7.1 # BSD
 pyparsing>=2.1.0 # MIT
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 stevedore>=1.20.0 # Apache-2.0
 unicodecsv>=0.8.0;python_version<'3.0' # BSD
 PyYAML>=3.10 # MIT
diff --git a/test-requirements.txt b/test-requirements.txt
index 440dfdbf..0628fbdd 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,9 +2,9 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-python-subunit>=0.0.18 # Apache-2.0/BSD
+python-subunit>=1.0.0 # Apache-2.0/BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
-testtools>=1.4.0 # MIT
+testtools>=2.2.0 # MIT
 mock>=2.0.0 # BSD
 testscenarios>=0.4 # Apache-2.0/BSD