1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index b539381d2..26f1e2fb3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -93,7 +93,7 @@ usedevelop = True
 changedir = doc/
 whitelist_externals = rm
 deps =
-   sphinx
+   sphinx==2.0
    python-docs-theme
 
 commands =