diff --git a/tox.ini b/tox.ini
index ce3d330..f7b61c1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,14 +18,12 @@ commands = flake8 kmip/
 [testenv:integration]
 # Note: This requires local or remote access to a KMIP appliance or service
 deps = {[testenv]deps}
-basepython=python2.7
 commands =
     py.test --strict kmip/tests/integration -m "not ignore" {posargs}
 
 [testenv:functional]
 # Note: This requires local access to instances of the PyKMIP server and SLUGS.
 deps = {[testenv]deps}
-basepython=python2.7
 commands =
     py.test --strict kmip/tests/functional -m "not ignore" {posargs}
 
@@ -38,7 +36,6 @@ changedir = docs
 deps =
     sphinx
     sphinx_rtd_theme
-basepython = python2.7
 commands =
 	sphinx-build -j4 -T -W -b html -d {envtmpdir}/doctrees source {envtmpdir}/html
 
@@ -46,7 +43,6 @@ commands =
 changedir = docs
 extras =
 deps = {[testenv:docs]deps}
-basepython = python2.7
 commands =
     sphinx-build -W -b linkcheck source {envtmpdir}/html