diff --git a/pyproject.toml b/pyproject.toml
index 1381c1e..a32059b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ test_packaging = [
     "twine==5.1.1"
 ]
 docs = [
-    "sphinx==8.0.2",
+    "sphinx==8.1.3",
     "sphinx_rtd_theme==3.0.1",
 ]