diff --git a/tox.ini b/tox.ini
index b848e7768..6cce44f25 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,7 +24,6 @@ commands =
 changedir = {toxinidir}
 deps = -r requirements_docs.txt
 
-extras = doc_build
 passenv = SSH_AUTH_SOCK
 setenv =
     SPHINX_THEME='pypa'