diff --git a/History.markdown b/History.markdown
index f0087c267f0..52ce4f83d43 100644
--- a/History.markdown
+++ b/History.markdown
@@ -12,6 +12,7 @@
 ### Development Fixes
 
   * Update appveyor.yml and fix optional deps for Ruby x64 (#5180)
+  * Improve tests for Jekyll::PluginManager (#5167)
 
 ### Bug Fixes