diff --git a/python/ruff-ecosystem/ruff_ecosystem/projects.py b/python/ruff-ecosystem/ruff_ecosystem/projects.py
index c58fa70bf8..19f92dd176 100644
--- a/python/ruff-ecosystem/ruff_ecosystem/projects.py
+++ b/python/ruff-ecosystem/ruff_ecosystem/projects.py
@@ -98,7 +98,7 @@ class Repository(Serializable):
         command.extend(
             [
                 f"https://github.com/{self.owner}/{self.name}",
-                checkout_dir,
+                str(checkout_dir),
             ],
         )