diff --git a/History.markdown b/History.markdown
index d7f696ad4..c0b6cae6a 100644
--- a/History.markdown
+++ b/History.markdown
@@ -69,6 +69,7 @@
   * Supress warning issued for redirect pages (#8347)
   * Add post_convert hook to modify HTML content before layout (#8368)
   * Cache Jekyll.sanitized_path (#8424)
+  * Memoize array of drop getter method names (#8421)
 
 ## 4.1.1 / 2020-06-24