diff --git a/code_to_optimize/bubble_sort.py b/code_to_optimize/bubble_sort.py
index 9e97f63a0..b2309395b 100644
--- a/code_to_optimize/bubble_sort.py
+++ b/code_to_optimize/bubble_sort.py
@@ -1,10 +1,14 @@
 def sorter(arr):
     print("codeflash stdout: Sorting list")
-    for i in range(len(arr)):
-        for j in range(len(arr) - 1):
-            if arr[j] > arr[j + 1]:
-                temp = arr[j]
-                arr[j] = arr[j + 1]
-                arr[j + 1] = temp
+    # Use the object's in-place sort if available (fast, O(n log n)).
+    # If arr does not provide sort(), fall back to sorting a temporary list
+    # and writing values back element-by-element to preserve in-place mutation.
+    try:
+        arr.sort()
+    except (AttributeError, TypeError):
+        tmp = list(arr)
+        tmp.sort()
+        for i in range(len(tmp)):
+            arr[i] = tmp[i]
     print(f"result: {arr}")
     return arr