diff --git a/History.markdown b/History.markdown
index 308d3ffa..23f81a0e 100644
--- a/History.markdown
+++ b/History.markdown
@@ -10,6 +10,7 @@
   * Remove most runtime deps (#3323)
   * Move to Rouge as default highlighter (#3323)
   * Mimic GitHub Pages `.html` extension stripping behavior in WEBrick (#3452)
+  * Always include file extension on output files (#3490)
 
 ### Minor Enhancements