diff --git a/History.markdown b/History.markdown
index 7c7df1cb..ef0fc19d 100644
--- a/History.markdown
+++ b/History.markdown
@@ -138,6 +138,7 @@
   * Target Ruby 2.4 syntax in RuboCop scans (#7583)
   * Bump RuboCop to v0.68.x (#7637)
   * Refactor Jekyll::Cache (#7532)
+  * Store list of expected extnames in a constant (#7638)
 
 ### Documentation