diff --git a/test-requirements.txt b/test-requirements.txt
index 2202587e5..532705177 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,4 +13,4 @@ sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
 oslosphinx>=2.2.0  # Apache-2.0
 testrepository>=0.0.18
 testscenarios>=0.4
-testtools>=0.9.36
+testtools>=0.9.36,!=1.2.0,!=1.4.0