diff --git a/sorts/gnome_sort.py b/sorts/gnome_sort.py
index ea96e0a926a3..3002bc6a8b18 100644
--- a/sorts/gnome_sort.py
+++ b/sorts/gnome_sort.py
@@ -51,6 +51,9 @@ def gnome_sort(lst: list) -> list:
 
 
 if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()
     user_input = input("Enter numbers separated by a comma:\n").strip()
     unsorted = [int(item) for item in user_input.split(",")]
     print(gnome_sort(unsorted))