diff --git a/requirements.txt b/requirements.txt
index d4e343ec61..ff25bfea87 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@
 # process, which may cause wedges in the gate later.
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 tripleo-common>=7.1.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 121381f6df..c8c1804bf8 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,14 +4,14 @@
 openstackdocstheme>=1.17.0 # Apache-2.0
 PyYAML>=3.10 # MIT
 Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 sphinx>=1.6.2 # BSD
 reno>=2.5.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/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
 testscenarios>=0.4 # Apache-2.0/BSD
-testtools>=1.4.0 # MIT
+testtools>=2.2.0 # MIT
 mock>=2.0.0 # BSD
 oslotest>=1.10.0 # Apache-2.0