diff --git a/requirements.txt b/requirements.txt
index 0892b7ff0d..6cd558c627 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 pynacl>=1.4.0
 requests>=2.14.0
 pyjwt>=2.0
-sphinx<3
+sphinx<9
 sphinx-rtd-theme<0.6
 Deprecated