diff --git a/tox.ini b/tox.ini
index df78c4713..746facca5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,7 @@ commands =
     coverage report --fail-under 75
 
 [testenv:pep8]
+basepython = python3
 # TODO: #deps = hacking==0.7
 deps = flake8
 usedevelop = False
@@ -30,6 +31,7 @@ commands =
     flake8 {posargs:.}
 
 [testenv:pep8-py34]
+basepython = python3
 # TODO: #deps = hacking==0.7
 deps = flake8
 usedevelop = False
@@ -37,6 +39,7 @@ commands =
     flake8 {posargs:.}
 
 [testenv:pep8-py35]
+basepython = python3
 # TODO: #deps = hacking==0.7
 deps = flake8
 usedevelop = False
@@ -51,6 +54,7 @@ show-source = True
 count = True
 
 [testenv:pylint]
+basepython = python3
 deps=
     {[testenv]deps}
     pylint
@@ -84,6 +88,7 @@ commands=pylint fuel_tests
 
 
 [testenv:docs]
+basepython = python3
 changedir = doc
 deps =
     {[testenv]deps}
@@ -91,6 +96,7 @@ deps =
 commands = sphinx-build -b html -d _build/doctrees . _build/html
 
 [testenv:cover]
+basepython = python3
 deps =
     {[testenv]deps}
 commands =