diff --git a/Misc/NEWS b/Misc/NEWS
index 4c45a85..bf63153 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -79,6 +79,9 @@
 Library
 -------
 
+- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
+  other than 900k.
+
 - Issue #13439: Fix many errors in turtle docstrings.
 
 - Issue #12856: Ensure child processes do not inherit the parent's random