Fixes issue #6838: use a list to accumulate the value instead of repeatedly concatenating strings.
diff --git a/Misc/NEWS b/Misc/NEWS
index bc7f5b0..f0a714c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -68,6 +68,11 @@
Library
-------
+- Issue #6838: Use a list to accumulate the value instead of
+ repeatedly concatenating strings in http.client's
+ HTTPResponse._read_chunked providing a significant speed increase
+ when downloading large files servend with a Transfer-Encoding of 'chunked'.
+
- Trying to import a submodule from a module that is not a package, ImportError
should be raised, not AttributeError.