diff --git a/heaps/heap_sort.py b/heaps/heap_sort.py
new file mode 100644
index 0000000..081bf89
--- /dev/null
+++ b/heaps/heap_sort.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+
+def heap_sort(self, lst: List[int]) -> None:
+
+      def max_heapify(heap_size, index):
+        
+            left, right = 2 * index + 1, 2 * index + 2
+            largest = index
+        
+            if left < heap_size and lst[left] > lst[largest]:
+                largest = left
+            if right < heap_size and lst[right] > lst[largest]:
+                largest = right
+            if largest != index:
+                lst[index], lst[largest] = lst[largest], lst[index]
+                max_heapify(heap_size, largest)
+
+      for i in range(len(lst) // 2 - 1, -1, -1):
+            max_heapify(len(lst), i)
+
+      for i in range(len(lst) - 1, 0, -1):
+            lst[i], lst[0] = lst[0], lst[i]
+            max_heapify(i, 0)
+