diff --git a/pyproject.toml b/pyproject.toml
index 792bc9e..ba3ec50 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dev = [
     "ufmt==2.7.1",
 ]
 docs = [
-    "sphinx==8.0.2",
+    "sphinx==8.1.3",
     "sphinx-mdinclude==0.6.2",
 ]