diff --git a/History.markdown b/History.markdown
index 718726a5..e87d5eac 100644
--- a/History.markdown
+++ b/History.markdown
@@ -19,6 +19,7 @@
   * Remind user to resolve conflict in `jekyll new` with `--force` (#6801)
   * Memoize helper methods in site-cleaner (#6808)
   * Compute document's relative_path faster (#6767)
+  * Create a single instance of PostReader per site (#6759)
 
 ### Documentation