diff --git a/docs/requirements.txt b/docs/requirements.txt
index f9db85146..85812be9a 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,4 @@
+-r ../requirements-py3.txt
 Sphinx>=2.1
 sphinx-notfound-page
 sphinx_rtd_theme