1 files changed, 3 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 9cd2a9f..60b0825 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,9 @@ commands=
 [testenv:docs]
 basepython=python2.7
 skipsdist=True
-deps=sphinx
+deps=
+        sphinx
+        sphinx_rtd_theme
 changedir=docs
 whitelist_externals=make
 commands=make clean html