diff --git a/History.markdown b/History.markdown
index 0c2e9d9c..33bb468d 100644
--- a/History.markdown
+++ b/History.markdown
@@ -22,6 +22,7 @@
 ### Site Enhancements
 
   * Fixing the default host on docs (#3229)
+  * Add `jekyll-thumbnail-filter` to list of third-party plugins (#2790)
 
 ## 2.5.3 / 2014-12-22