diff --git a/requirements.txt b/requirements.txt
index e929eb9..39a7f30 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ oslo.concurrency>=3.20.0 # Apache-2.0
 oslo.log>=3.30.0 # Apache-2.0
 oslo.utils>=3.31.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
diff --git a/test-requirements.txt b/test-requirements.txt
index 06dea62..a4f2c4e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,14 +5,14 @@
 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
 oslosphinx>=4.7.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 os-testr>=1.0.0 # 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