diff --git a/gptc/pack.py b/gptc/pack.py
index 931fc01..9a20a4a 100644
--- a/gptc/pack.py
+++ b/gptc/pack.py
@@ -5,7 +5,9 @@ import os
 from typing import List, Dict, Tuple
 
 
-def pack(directory: str, print_exceptions: bool=False) -> Tuple[List[Dict[str, str]], List[Tuple[Exception]]]:
+def pack(
+    directory: str, print_exceptions: bool = False
+) -> Tuple[List[Dict[str, str]], List[Tuple[Exception]]]:
     paths = os.listdir(directory)
     texts: Dict[str, List[str]] = {}
     exceptions = []