diff --git a/chuni/calc_title_server_enc_key.py b/chuni/calc_title_server_enc_key.py
index 8ce8423..5c405f8 100644
--- a/chuni/calc_title_server_enc_key.py
+++ b/chuni/calc_title_server_enc_key.py
@@ -1,3 +1,9 @@
+# /// script
+# requires-python = ">=3.10"
+# dependencies = [
+#     "pefile",
+# ]
+# ///
 from hashlib import pbkdf2_hmac
 import os
 import struct