1 files changed, 3 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index b72ab731dd..5304df451d 100644
--- a/NEWS
+++ b/NEWS
@@ -511,6 +511,9 @@ File::
   * File.realpath now uses realpath(3) on many platforms, which can
     significantly improve performance.
 
+Monitor::
+  * Monitor class is written in C-extension. [Feature #16255]
+
 Thread::
 
   * VM stack memory allocation is now combined with native thread stack,