diff --git a/src/dirmanager.py b/src/dirmanager.py
index 20c13fc..57491c3 100644
--- a/src/dirmanager.py
+++ b/src/dirmanager.py
@@ -16,8 +16,10 @@ class DirManager:
             ...
     """
 
-    def __init__(self, tests_dir: Path, session_id: str):
+    def __init__(self, tests_dir: Path | str, session_id: str):
         # root test dir
+        if isinstance(tests_dir, str):
+            tests_dir = Path(tests_dir)
         self._tests_dir = tests_dir.resolve()
         self.session_id = session_id