diff --git a/pyproject.toml b/pyproject.toml
index 1c8ba48..1309f65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -75,7 +75,7 @@ optional-dependencies.dev = [
     # use it to lint shell commands in GitHub workflow files.
     "shellcheck-py==0.10.0.1",
     "shfmt-py==3.7.0.1",
-    "sphinx==8.1.0",
+    "sphinx==8.1.1",
     "sphinx-click==6.0.0",
     "sphinx-copybutton==0.5.2",
     "sphinx-inline-tabs==2023.4.21",