diff --git a/requirements.txt b/requirements.txt
index 6d1ea79..413c5cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ python-subunit>=0.0.18
 six>=1.7.0
 testrepository>=0.0.18
 testscenarios>=0.4
-testtools>=0.9.36,!=1.2.0,!=1.4.0
+testtools>=0.9.36,!=1.2.0
 mock>=1.0
 mox3>=0.7.0