diff --git a/docs/requirements.txt b/docs/requirements.txt
index 092795d..4822ef3 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
-sphinx==1.8.3
+sphinx==1.8.4
 sphinx-rtd-theme==0.4.2
 -e .