diff --git a/requirements.txt b/requirements.txt
index 7b27936b..1f8c1e0f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 stevedore>=1.20.0 # Apache-2.0
 netaddr>=0.7.18 # BSD
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.utils>=3.31.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 1113a429..58f4ef74 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -7,9 +7,9 @@ hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
-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
 
 # when we can require tox>= 1.4, this can go into tox.ini:
 #  [testenv:cover]