diff --git a/requirements.txt b/requirements.txt
index c82dc15..88aa8bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,6 @@
 
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 PyYAML>=3.10 # MIT
-six>=1.9.0 # MIT
+six>=1.10.0 # MIT
 sphinx>=1.6.2 # BSD
 openstackdocstheme>=1.17.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index a03b04a..585a62e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,9 +5,9 @@
 hacking!=0.13.0,<0.14,>=0.12.0 # 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
 oslosphinx>=4.7.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
-testtools>=1.4.0 # MIT
+testtools>=2.2.0 # MIT
 sphinx-testing>=0.7.2 # BSD License
 beautifulsoup4>=4.6.0 # MIT