diff --git a/openwrt_backup/config.py b/openwrt_backup/config.py
index 5ca91bb..7e3996e 100644
--- a/openwrt_backup/config.py
+++ b/openwrt_backup/config.py
@@ -1,24 +1,25 @@
-import os
+from pathlib import Path
 import shutil
 
 import appdirs as _appdirs
 import toml
 
 
-def ensure_directory_exists(path):
-    os.makedirs(path, exist_ok=True)
-    return path
+def ensure_directory_exists(path: str):
+    p = Path(path)
+    p.mkdir(parents=True, exist_ok=True)
+    return p
 
 
 appdirs = _appdirs.AppDirs("openwrt_backup")
 
 CONFIG_DIR = ensure_directory_exists(appdirs.user_config_dir)
 CACHE_DIR = ensure_directory_exists(appdirs.user_cache_dir)
-CONFIG_FILE_PATH = os.path.join(CONFIG_DIR, "config.toml")
-PACKAGE_ROOT = os.path.dirname(os.path.abspath(__file__))
+CONFIG_FILE_PATH = CONFIG_DIR / "config.toml"
+PACKAGE_ROOT = Path(__file__).absolute().parent
 
-if not os.path.exists(CONFIG_FILE_PATH):
-    shutil.copy(os.path.join(PACKAGE_ROOT, "config.toml"), CONFIG_FILE_PATH)
+if not CONFIG_FILE_PATH.exists():
+    shutil.copy(PACKAGE_ROOT / "config.toml", CONFIG_FILE_PATH)
 
-with open(CONFIG_FILE_PATH, "r") as config_file:
+with CONFIG_FILE_PATH.open("r") as config_file:
     CONFIG_DATA = toml.load(config_file)