diff --git a/requirements.txt b/requirements.txt
index 8ce08cf12..08ea1c6ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-Sphinx==1.7.1
+Sphinx==1.8.5
 sphinx-rtd-theme==0.2.4
 sphinx-autobuild==0.7.1
\ No newline at end of file