diff --git a/pyproject.toml b/pyproject.toml
index 41865ef5..c84917a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -79,7 +79,7 @@ optional-dependencies.dev = [
     "torch>=2.5.1",
     "torchvision>=0.20.1",
     "towncrier==25.8.0",
-    "ty==0.0.38",
+    "ty==0.0.39",
     "types-requests==2.33.0.20260518",
     "vulture==2.16",
     "vws-python-mock==2026.2.22.3",