diff --git a/doc_requirements.txt b/doc_requirements.txt
index 48e0ffcfb28..68687f281c9 100644
--- a/doc_requirements.txt
+++ b/doc_requirements.txt
@@ -1,5 +1,5 @@
 psyneulink-sphinx-theme<1.2.8.0
-sphinx>=5, <8.2.4
+sphinx>=5, <9.0.1
 sphinx_autodoc_typehints<3.6.0
 
 standard-imghdr <3.14; python_version >= '3.13'