diff --git a/requirements.txt b/requirements.txt
index c709d0e..d9365d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 docutils>=0.16
-sphinx<3.4.0,>=3.2.0
+sphinx<3.6.0,>=3.2.0