diff --git a/test-requirements.txt b/test-requirements.txt
index 0544322..c446262 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,7 +13,7 @@ coverage!=4.4,>=4.0 # Apache-2.0
 django-nose>=1.4.4 # BSD
 mock>=2.0.0 # BSD
 mox3>=0.20.0 # Apache-2.0
-testtools>=1.4.0 # MIT
+testtools>=2.2.0 # MIT
 
 # For docs
 sphinx>=1.6.2 # BSD