diff --git a/test-requirements.txt b/test-requirements.txt
index 6f1dce02d1..084b450b96 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -25,7 +25,6 @@ testresources>=0.2.4 # Apache-2.0/BSD
 reno>=1.8.0 # Apache-2.0
 # Next are used in integration tests only
 os-collect-config # Apache-2.0
-os-testr>=0.8.0 # Apache-2.0
 paramiko>=2.0 # LGPLv2.1+
 tempest>=14.0.0 # Apache-2.0
 gabbi>=1.26.1 # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 9fc994a4dc..9871a879c4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands =
   find {toxinidir} -not -path '{toxinidir}/.tox/*' -name '*.py[c|o]' -delete
-  ostestr --slowest '{posargs}'
+  python setup.py testr --slowest --testr-args='{posargs}'
 
 whitelist_externals =
   bash