diff --git a/pyproject.toml b/pyproject.toml
index ec8ec960..7b59084b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ semantic-version = "^2.10.0"
 bottle = ">=0.12.25,<0.14.0"
 tqdm = "^4.66.5"
 pygit2 = "^1.15.1"
-tyro = "^0.8.3"
+tyro = ">=0.8.3,<0.10.0"
 gitpython = "^3.1.43"
 setuptools = ">=69.5.1,<76.0.0"
 [tool.poetry.dev-dependencies]