diff --git a/docs/requirements.txt b/docs/requirements.txt
index 4e4c4357..a6264da4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx==3.2.1
+sphinx==9.1.0
 sphinx-autodoc-typehints==1.11.1
 sphinx-rtd-theme==0.5.0
 m2r2==0.2.5
\ No newline at end of file