diff --git a/WHATSNEW b/WHATSNEW
index a1c36d1f9..521c1b47a 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -12,6 +12,10 @@ Fixed bugs:
 
 * Incorrect recursion in DOMUtil.listChildNodes()
   Bugzilla 40918.
+  
+* compareTo method in CompressedResource does not 
+  take comparison with another CompressedResouce into account.
+  Bugzilla 40949.
 
 Other changes:
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