diff --git a/NEWS b/NEWS
index 4adff4d68f..0a53aa2ee0 100644
--- a/NEWS
+++ b/NEWS
@@ -37,7 +37,7 @@ with all sufficient information, see the ChangeLog file or Redmine
   * String#-@ deduplicates unfrozen strings.  Already-frozen
     strings remain unchanged for compatibility.  [Feature #13077]
   * -"literal" (String#-@) optimized to return the same object
-    (same as "literal".freeze in Ruby 2.1+)
+    (same as "literal".freeze in Ruby 2.1+) [Feature #13295]
 
 === Stdlib updates (outstanding ones only)