diff --git a/src/utils.py b/src/utils.py
index 1234567..abcdefg 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -1,5 +1,8 @@
 """Utility functions."""


+def add(a: int, b: int) -> int:
+    """Add two numbers."""
+    return a + b
+
+
 def subtract(a: int, b: int) -> int:
     """Subtract two numbers."""
     return a - b