diff --git a/isilon/requests/docs/requirements.txt b/isilon/requests/docs/requirements.txt
index 3049177..7e5f96d 100644
--- a/isilon/requests/docs/requirements.txt
+++ b/isilon/requests/docs/requirements.txt
@@ -1 +1 @@
-Sphinx==1.1.3
+Sphinx==3.3.0