diff --git a/pyproject.toml b/pyproject.toml
index 95d4e4d99..da0f3f839 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ Tidelift = "https://tidelift.com/subscription/pkg/pypi-marshmallow?utm_source=py
 docs = [
   "sphinx==8.0.2",
   "sphinx-issues==4.1.0",
-  "alabaster==0.7.16",
+  "alabaster==1.0.0",
   "sphinx-version-warning==1.1.2",
   "autodocsumm==0.2.13",
 ]