diff --git a/doc_requirements.txt b/doc_requirements.txt
index f4c95bd01e8..022f051da2b 100644
--- a/doc_requirements.txt
+++ b/doc_requirements.txt
@@ -1,3 +1,3 @@
 psyneulink-sphinx-theme<1.2.4.1
-sphinx<4.2.1
+sphinx<8.1.4
 sphinx_autodoc_typehints<1.16.0