diff --git a/requirements.txt b/requirements.txt
index 3a9832e15bf..d0e30c02d4b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-sphinx==4.5.0
+sphinx==9.1.0
 sphinx-intl==2.1.0
 sphinx-JDLinker==2.0.1
 sponge-docs-theme==1.1.0