diff --git a/tox.ini b/tox.ini
index 21ed0ae..6fe0aac 100644
--- a/tox.ini
+++ b/tox.ini
@@ -57,16 +57,16 @@ commands =
 [testenv:docs]
 description = build the documentation
 skipdist = True
-deps = 
-  sphinx
+extras =
+  docs
 commands = 
   python -m setup build_sphinx
 
 [testenv:changelog]
 description = draft the changelog
 skipdist = True
-deps = 
-  towncrier
+extras = 
+  changelog
 commands = 
   towncrier --draft