diff --git a/pyproject.toml b/pyproject.toml
index 69fc622d..e31b0160 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -73,7 +73,7 @@ optional-dependencies.dev = [
     "sphinx-substitution-extensions==2025.12.15",
     "sphinxcontrib-spelling==8.0.2",
     "sybil==9.3.0",
-    "ty==0.0.8",
+    "ty==0.0.9",
     "types-requests==2.32.4.20250913",
     "vulture==2.14",
     "vws-python-mock==2025.3.10.1",