diff --git a/tox.ini b/tox.ini
index b9ade44a80..281adaa025 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = docs,py35,py34,py27,pep8,specs
+envlist = docs,py35,py34,py27,functional,pep8,specs
 skipsdist = True
 
 [testenv]
@@ -18,11 +18,25 @@ commands =
   python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:cover]
-commands = python setup.py testr --coverage --testr-args='{posargs}'
+whitelist_externals = sh
+commands =
+    sh -c 'COVERAGE_FILE={toxinidir}/.coverage-py27 python setup.py testr --coverage --testr-args='{posargs}''
+    sh -c 'COVERAGE_FILE={toxinidir}/.coverage-functional OS_TEST_PATH={toxinidir}/octavia/tests/functional python setup.py testr --coverage --testr-args='{posargs}''
+    sh -c 'ls -al'
+    coverage combine --debug=dataio {toxinidir}/.coverage-py27 {toxinidir}/.coverage-functional
+    coverage html -d cover
 
 [testenv:functional]
 setenv = OS_TEST_PATH={toxinidir}/octavia/tests/functional
 
+[testenv:functional-py34]
+basepython = python3.4
+setenv = OS_TEST_PATH={toxinidir}/octavia/tests/functional
+
+[testenv:functional-py35]
+basepython = python3.5
+setenv = OS_TEST_PATH={toxinidir}/octavia/tests/functional
+
 [testenv:debug]
 commands = oslo_debug_helper {posargs}