diff --git a/pyproject.toml b/pyproject.toml
index 9a5d71ea..e3983e62 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ optional-dependencies.dev = [
     # into docs/source/unreleased.rst during Sphinx builds.
     "sphinxcontrib-towncrier==0.5.0a0",
     "strict-kwargs==2026.6.8.post1",
-    "sybil==10.0.1",
+    "sybil==10.1.0",
     # Listed explicitly (despite being transitive via vws-python-mock) so that
     # [tool.uv.sources] can redirect to the CPU-only PyTorch index.
     # See: https://vws-python.github.io/vws-python-mock/installation.html#faster-installation