Make sure we add st2common to PYTHONPATH.
@@ -28,7 +28,7 @@ commands =
[testenv:py35]
basepython = python3.5
-setenv = PYTHONPATH = {toxinidir}/external
+setenv = PYTHONPATH = {toxinidir}/external:{toxinidir}/st2common
VIRTUALENV_DIR = {envdir}
install_command = pip install -U --force-reinstall {opts} {packages}
deps = -r{toxinidir}/requirements.txt
