diff --git a/tox.ini b/tox.ini
index ac10b1f..7028c13 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ usedevelop = True
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 commands =
     find . -type f -name "*.py[c|o]" -delete
-    ostestr --slowest {posargs}
+    ostestr --slowest --regex 'senlin_tempest_plugin.api.*' {posargs}
 
 whitelist_externals = find
 
@@ -20,7 +20,7 @@ setenv = VIRTUAL_ENV={envdir}
          OS_TEST_PATH=senlin_tempest_plugin/api
 commands =
     find . -type f -name "*.py[c|o]" -delete
-    ostestr --slowest {posargs}
+    ostestr --slowest --regex 'senlin_tempest_plugin.functional.*' {posargs}
 
 [testenv:functional]
 basepython = python3.5