diff --git a/src/utils.py b/src/utils.py
index 9e8f03b..06318f0 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -1,4 +1,4 @@
-def write(name, file):
+def write(name: str, file: str):
     with open(f"{file}.txt", "a") as f:
         # add a new line
         f.write(name + "\n")