diff --git a/History.markdown b/History.markdown
index a4ca2373..1c99cb69 100644
--- a/History.markdown
+++ b/History.markdown
@@ -76,6 +76,7 @@
   * Add basic `jekyll doctor` test to detect fsnotify (OSX) anomalies. (#3704)
   * Added talk.jekyllrb.com to "Have questions?" (#3694)
   * Performance: Sort files only once (#3707)
+  * Performance: Marshal metadata (#3706)
 
 ### Bug Fixes