diff --git a/tox.ini b/tox.ini
index d482f33c..a80a722d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -42,6 +42,14 @@ setenv = AUTH=tempauth
          LOG_DEST={envdir}/log
          S3ACL=true
 
+[testenv:s3acl_master]
+commands = /bin/bash {posargs:swift3/test/functional/run_test.sh}
+setenv = AUTH=tempauth
+         S3ACL=true
+deps =
+  -r{toxinidir}/test-requirements.txt
+  git+git://github.com/openstack/swift.git
+
 [testenv:pylint]
 # Avoid to fail by checking members at lxml dynamically loaded module
 commands = pylint -E swift3 --ignored-modules=lxml.etree