diff --git a/python/pyproject.toml b/python/pyproject.toml
index 70e15beca9..78045b9005 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -40,7 +40,7 @@ dev = [
     "mypy==2.3.0",
     "pyright==1.1.411",
     "pyrefly==1.2.0",
-    "ty==0.0.64",
+    "ty==0.0.70",
     "zuban==0.9.1",
     "opentelemetry-sdk",
     #tasks