diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4a6a0d0e9..aa66a714a 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,4 @@
+sphinx==1.6.3
 sphinxcontrib-asyncio
 sphinx_rtd_theme
-git+https://github.com/Rapptz/discord.py@rewrite#egg=discord.py[voice]
\ No newline at end of file
+git+https://github.com/Rapptz/discord.py@rewrite#egg=discord.py[voice]