diff --git a/pyproject.toml b/pyproject.toml
index 76ff5ff..38f0382 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -66,7 +66,7 @@ optional-dependencies.dev = [
     "sphinx-substitution-extensions==2025.11.17",
     "sphinxcontrib-spelling==8.0.2",
     "sybil==9.3.0",
-    "sybil-extras==2025.11.19",
+    "sybil-extras==2025.12.4",
     "vulture==2.14",
     "yamlfix==1.19.0",
 ]