diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9ccaf8e..979f568 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,6 +2,6 @@
 #
 # SPDX-License-Identifier: Unlicense
 
-sphinx>=4.0.0
+sphinx
 sphinxcontrib-jquery
 sphinx-rtd-theme