diff --git a/requirements.txt b/requirements.txt
index 989b1e5..7e2907f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 PyYAML>=3.10 # MIT
 yaql>=1.1.3 # Apache 2.0 License
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 stevedore>=1.20.0 # Apache-2.0
 semantic-version>=2.3.1 # BSD
 oslo.i18n>=3.15.3 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 99d8ccc..f8b83f7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,13 +5,13 @@
 hacking<0.12,>=0.11.0 # 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
 
 # releasenotes
 reno>=2.5.0 # Apache-2.0