diff --git a/test-requirements.txt b/test-requirements.txt
index b35c1ca..14a97d9 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,6 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 coverage!=4.4,>=4.0 # Apache-2.0
-discover
 dpath>=1.3.2
 fixtures>=3.0.0 # Apache-2.0/BSD
 # Hacking already pins down pep8, pyflakes and flake8
@@ -18,7 +17,6 @@ sphinx!=1.6.6,>=1.6.2 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
-yamllint>=1.2.0
 os-apply-config>=5.0.0 # Apache-2.0
 
 python-heatclient>=1.10.0 # Apache-2.0