diff --git a/pyproject.toml b/pyproject.toml
index 07d57bc..370c23a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ classifiers = [
 ]
 
 dependencies = [
-    "sphinx>=7.2.6,<9",
+    "sphinx>=9.0.4,<10",
     "sphinx-searchlite",
 ]