diff --git a/docs/requirements.txt b/docs/requirements.txt
index cac7987..f47b172 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-sphinx==2.0.1
+sphinx==2.1.0
 sphinx-rtd-theme==0.4.3
 -e .