diff --git a/tox.ini b/tox.ini
index 1b82a2e336d1..7a78dd3d5530 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,13 +2,11 @@
 passenv = HOME LC_ALL LC_CTYPE CC CFLAGS
 
 [testenv:test]
-deps =
-  pytest-astropy
+extras = test
 commands =
   pytest --pyargs astropy
 
 [testenv:build_docs]
-deps =
-  sphinx-astropy
+extras = docs
 commands =
   sphinx-build docs docs/_build/html -W -b html