diff --git a/docs/requirements.txt b/docs/requirements.txt
index f2ec24c2ea..51029bcba8 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
-sphinx==1.8.5
-recommonmark==0.5.0
+sphinx<3
+recommonmark==0.6.0
 sphinxcontrib-svg2pdfconverter==0.1.0
 astroid
 sphinx-autoapi