diff --git a/pyproject.toml b/pyproject.toml
index 9bc7cc87..013deb48 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ marshmallow = ["marshmallow>=3.18.0"]
 docs = [
   "apispec[marshmallow]",
   "pyyaml==6.0.2",
-  "sphinx==8.1.0",
+  "sphinx==8.1.3",
   "sphinx-issues==5.0.0",
   "sphinx-rtd-theme==3.0.1",
 ]