diff --git a/exercises/difference-of-squares/difference_of_squares_test.py b/exercises/difference-of-squares/difference_of_squares_test.py
index f300df736ce..8c874036257 100644
--- a/exercises/difference-of-squares/difference_of_squares_test.py
+++ b/exercises/difference-of-squares/difference_of_squares_test.py
@@ -3,7 +3,7 @@
 from difference_of_squares import difference, square_of_sum, sum_of_squares
 
 
-# Tests adapted from `problem-specifications//canonical-data.json` @ v1.1.0
+# Tests adapted from `problem-specifications//canonical-data.json` @ v1.2.0
 
 class DifferenceOfSquaresTest(unittest.TestCase):
     def test_square_of_sum_1(self):