diff --git a/pyproject.toml b/pyproject.toml
index 233be4e..5e22b8f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ test = [
   "ruff<=0.15.14,>=0.15.14",
   "coverage<=7.14.0,>=7.14.0",
   "prek>=0.4.1,<0.5.0",
-  "ty<=0.0.33,>=0.0.33",
+  "ty<=0.0.42,>=0.0.42",
 ]
 
 [build-system]