diff --git a/setup.cfg b/setup.cfg
index ddcdf9e..d580304 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,7 +17,7 @@ classifier =
         Operating System :: OS Independent
         Programming Language :: Python
         Programming Language :: Python :: 2.7
-        Programming Language :: Python :: 3.4
+        Programming Language :: Python :: 3.5
         Programming Language :: Python :: Implementation :: CPython
         Programming Language :: Python :: Implementation :: PyPy
         License :: OSI Approved :: MIT License
diff --git a/tox.ini b/tox.ini
index bd10fa7..4575b7d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -43,6 +43,7 @@ commands =
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsmeext/cornice.py
 
 [testenv:pecan-dev-base]
+basepython = python3
 deps = 
 	{[common]testtools}
 	transaction
@@ -62,7 +63,7 @@ commands =
 	{envbindir}/nosetests tests/pecantest --with-xunit --xunit-file nosetests-{envname}.xml --verbose {posargs}
 
 [testenv:coverage]
-basepython = python
+basepython = python3
 deps = 
 	coverage < 3.99
 setenv = 
@@ -74,6 +75,7 @@ commands =
 	{envbindir}/coverage report --show-missing wsme/*.py wsme/protocols/*.py wsmeext/*.py
 
 [testenv:doc]
+basepython = python3
 deps = 
 	cloud_sptheme
 	Sphinx < 1.2.99
@@ -88,6 +90,7 @@ deps = flake8
 commands = flake8 wsme wsmeext setup.py
 
 [testenv:venv]
+basepython = python3
 commands = {posargs}
 usedevelop = True
 deps = 
@@ -668,6 +671,7 @@ deps =
 basepython = python3.5
 
 [testenv:pypy-sa5-lxml-json]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -680,6 +684,7 @@ deps =
 	lxml
 
 [testenv:pypy-sa5]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -692,6 +697,7 @@ deps =
 	lxml
 
 [testenv:pypy-sa5-lxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -705,6 +711,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa5-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -718,6 +725,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa5-nolxml-json]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -729,6 +737,7 @@ deps =
 	SQLAlchemy<=0.5.99
 
 [testenv:pypy-sa5-nolxml]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -740,6 +749,7 @@ deps =
 	SQLAlchemy<=0.5.99
 
 [testenv:pypy-sa5-nolxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -752,6 +762,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa6-lxml-json]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -764,6 +775,7 @@ deps =
 	lxml
 
 [testenv:pypy-sa6]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -776,6 +788,7 @@ deps =
 	lxml
 
 [testenv:pypy-sa6-lxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -789,6 +802,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa6-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -802,6 +816,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa6-nolxml-json]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -813,6 +828,7 @@ deps =
 	SQLAlchemy<=0.6.99
 
 [testenv:pypy-sa6-nolxml]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -824,6 +840,7 @@ deps =
 	SQLAlchemy<=0.6.99
 
 [testenv:pypy-sa6-nolxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -836,6 +853,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa7-lxml-json]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -848,6 +866,7 @@ deps =
 	lxml
 
 [testenv:pypy]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -860,6 +879,7 @@ deps =
 	lxml
 
 [testenv:pypy-sa7-lxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -873,6 +893,7 @@ deps =
 	simplejson
 
 [testenv:pypy-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -886,6 +907,7 @@ deps =
 	simplejson
 
 [testenv:pypy-sa7-nolxml-json]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -897,6 +919,7 @@ deps =
 	SQLAlchemy<=0.7.99
 
 [testenv:pypy-nolxml]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -908,6 +931,7 @@ deps =
 	SQLAlchemy<=0.7.99
 
 [testenv:pypy-sa7-nolxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py
@@ -920,6 +944,7 @@ deps =
 	simplejson
 
 [testenv:pypy-nolxml-simplejson]
+basepython = python3
 commands = 
 	{envbindir}/coverage run {envbindir}/nosetests --nologcapture --with-xunit --xunit-file nosetests-{envname}.xml wsme/tests wsmeext/tests tests/pecantest tests/test_sphinxext.py tests/test_flask.py --verbose {posargs}
 	{envbindir}/coverage xml -o coverage-{envname}.xml wsme/*.py wsme/rest/*.py wsmeext/*.py