diff --git a/requirements_doc.txt b/requirements_doc.txt
index 04183b04..f6984278 100644
--- a/requirements_doc.txt
+++ b/requirements_doc.txt
@@ -1,4 +1,4 @@
-Sphinx==7.3.7
+Sphinx==8.1.3
 sphinx-rtd-theme==2.0.0
 autodoc_pydantic==2.2.0
 numpy==2.1.2