diff --git a/05_compare_speed/01_square/square.png b/05_compare_speed/01_square/square.png
index aa86493224b94cb1f57edef9ae9e6ce63a6ac184..9dc027fde70d20adf26f1eb4c2a0a73009118c11 100644
Binary files a/05_compare_speed/01_square/square.png and b/05_compare_speed/01_square/square.png differ