diff --git a/lib/square_array.rb b/lib/square_array.rb
index 852a8fe..79f67a1 100644
--- a/lib/square_array.rb
+++ b/lib/square_array.rb
@@ -1,3 +1,6 @@
 def square_array(array)
-  # your code here
+  for index in 0...array.size
+    array[index] *= array[index]
+  end
+  array
 end
\ No newline at end of file