diff --git a/tosfs/core.py b/tosfs/core.py
index 7f5b3fa..d8fb234 100644
--- a/tosfs/core.py
+++ b/tosfs/core.py
@@ -15,7 +15,7 @@
 """The core module of TOSFS."""
 import logging
 import os
-from typing import List, Optional, Tuple, Union
+from typing import Any, List, Optional, Tuple, Union
 
 import tos
 from fsspec import AbstractFileSystem
@@ -252,7 +252,7 @@ def rmdir(self, path: str) -> None:
         except Exception as e:
             raise TosfsError(f"Tosfs failed with unknown error: {e}") from e
 
-    def touch(self, path, truncate=True, **kwargs):
+    def touch(self, path: str, truncate: bool = True, **kwargs: Any) -> None:
         """Create a file at the given path.
 
         Parameters
diff --git a/tosfs/tests/test_tosfs.py b/tosfs/tests/test_tosfs.py
index 3adf361..059812e 100644
--- a/tosfs/tests/test_tosfs.py
+++ b/tosfs/tests/test_tosfs.py
@@ -154,6 +154,3 @@ def test_touch(tosfs: TosFileSystem, bucket: str, temporary_workspace: str) -> N
     assert tosfs.info(f"{bucket}/{temporary_workspace}/{file_name}")["size"] > 0
     tosfs.touch(f"{bucket}/{temporary_workspace}/{file_name}", truncate=True)
     assert tosfs.info(f"{bucket}/{temporary_workspace}/{file_name}")["size"] == 0
-
-
-