diff --git a/program.py b/program.py
index 24b9dc5..48aa58e 100755
--- a/program.py
+++ b/program.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-# https://adventofcode.com/2022/day/
+# https://adventofcode.com/2023/day/
 
 def get_lines(filename: str) -> list:
     with open(filename, "r") as file: