diff --git a/README.md b/README.md
index c6a4dd1..e3aebf4 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,8 @@ analyze the draws should start at the most recent rule change date.
 numbers and the Powerball pool reduced from 35 to 26 numbers.**
 
 **The most recent change for Mega Millions was on April 5, 2025, when the Megaball ball pool was decreased from
-25 to 24 numbers as well as the addition of a 10x multiplier.**
+25 to 24 numbers as well as the addition of a 10x multiplier.  The existing pool of 70 numbers for the main
+game ball pool was part of changes made on October 28, 2017.**
 
 Historical results can be scraped from the web and added to the database from the URLs below.  The
 results must be scraped by year.  Changing the year in the URLs alters the resultset displayed.