diff --git a/requirements.txt b/requirements.txt
index a18f532..50e5fed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 monotonic>=0.6 # Apache-2.0
 futures>=3.0.0;python_version=='2.7' or python_version=='2.6' # BSD
 contextlib2>=0.4.0 # PSF License
diff --git a/test-requirements.txt b/test-requirements.txt
index 78e840f..c36f81c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,11 +9,11 @@ eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
 
 doc8>=0.6.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
-python-subunit>=0.0.18 # Apache-2.0/BSD
+python-subunit>=1.0.0 # Apache-2.0/BSD
 sphinx>=1.6.2 # BSD
 openstackdocstheme>=1.17.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
-testtools>=1.4.0 # MIT
+testtools>=2.2.0 # MIT
 reno>=2.5.0 # Apache-2.0