diff --git a/doc/python_api/requirements.txt b/doc/python_api/requirements.txt
index 19091a53cda..c2b5b2fd794 100644
--- a/doc/python_api/requirements.txt
+++ b/doc/python_api/requirements.txt
@@ -1,2 +1,2 @@
-Sphinx==1.7.6
-sphinx_rtd_theme==0.4.1
+Sphinx==1.8.5
+sphinx_rtd_theme==0.4.3