diff --git a/setup.py b/setup.py
index 805ac671..b331c80f 100644
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,6 @@ setup(
     zip_safe=False,
     install_requires=find_requires(),
     include_package_data=True,
-    setup_requires=['sphinx'],
     entry_points={
         'console_scripts': [
             'solar = solar.cli.main:run']})
diff --git a/tox.ini b/tox.ini
index 4922b051..4de29414 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,6 +20,7 @@ commands =
 
 [testenv:venv]
 deps = -r{toxinidir}/requirements.txt
+       sphinx
 commands = {posargs:}
 
 [testenv:devenv]