diff --git a/tox.ini b/tox.ini
index e709b4d0d..4652da5a7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -58,6 +58,18 @@ commands =
   find . -type f -name "*.pyc" -delete
   bash tools/pretty_tox.sh '{posargs}'
 
+# TODO(gcb) Merge this into [testenv:functional] when functional tests are gating
+# with python 3.5
+[testenv:functional-py35]
+basepython = python3.5
+usedevelop = True
+setenv = VIRTUAL_ENV={envdir}
+       OS_TEST_PATH=./nova/tests/functional
+       LANGUAGE=en_US
+commands =
+  find . -type f -name "*.pyc" -delete
+  bash tools/pretty_tox3.sh '{posargs}'
+
 [testenv:api-samples]
 usedevelop = True
 setenv = VIRTUAL_ENV={envdir}