diff --git a/pyproject.toml b/pyproject.toml
index 39ca2b9..253fa83 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 
 [project.optional-dependencies]
 docs = [
-    "Sphinx==8.0.2",
+    "Sphinx==8.1.3",
     "furo==2024.8.6",
     "sphinx_mdinclude==0.6.0",
 ]