diff --git a/sorts/gnome_sort.py b/sorts/gnome_sort.py
index ea96e0a926a3..b3f3f53adbf8 100644
--- a/sorts/gnome_sort.py
+++ b/sorts/gnome_sort.py
@@ -51,6 +51,10 @@ def gnome_sort(lst: list) -> list:
 
 
 if __name__ == "__main__":
+    from doctest import testmod
+
+    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))