diff --git a/tox.ini b/tox.ini
index e73ce386f5..9b43164437 100644
--- a/tox.ini
+++ b/tox.ini
@@ -87,15 +87,8 @@ passenv =
     KSTEST_USER_DOMAIN_ID
     KSTEST_PROJECT_ID
 
-[testenv:debug-py35]
-basepython = python3.5
-commands =
-  # Cleanup *pyc
-  find keystone -type f -name "*.pyc" -delete
-  oslo_debug_helper {posargs}
-
 [testenv:functional]
-basepython = python3.5
+basepython = python3
 deps = -r{toxinidir}/test-requirements.txt
 setenv = OS_TEST_PATH=./keystone/tests/functional
 commands =