diff --git a/test-requirements.txt b/test-requirements.txt
index 53ec476..aabd83b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -10,7 +10,7 @@ mox3>=0.20.0 # Apache-2.0
 oslo.config>=4.6.0 # Apache-2.0
 pylint==1.4.5 # GPLv2
 testrepository>=0.0.18 # Apache-2.0/BSD
-testtools>=1.4.0 # MIT
+testtools>=2.2.0 # MIT
 unittest2>=1.1.0 # BSD
 sphinx>=1.6.2 # BSD
 oslosphinx>=4.7.0 # Apache-2.0