diff --git a/docs/requirements.txt b/docs/requirements.txt
index 6303ece6..8f687646 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,2 @@
 sphinx==4.1.2
-furo==2021.7.28b39
+furo==2021.7.28b40