Fixed #8463: added missing reference to bztar in shutil's documentation.
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index 25c911f..23f03e7 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -249,7 +249,7 @@
 
    *base_name* is the name of the file to create, including the path, minus
    any format-specific extension. *format* is the archive format: one of
-   "zip", "tar", "ztar", or "gztar".
+   "zip", "tar", "ztar", "bztar" or "gztar".
 
    *root_dir* is a directory that will be the root directory of the
    archive; ie. we typically chdir into *root_dir* before creating the
diff --git a/Lib/shutil.py b/Lib/shutil.py
index a94c5e1..5cfea63 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -525,7 +525,7 @@
 
     'base_name' is the name of the file to create, minus any format-specific
     extension; 'format' is the archive format: one of "zip", "tar", "ztar",
-    or "gztar".
+    "bztar" or "gztar".
 
     'root_dir' is a directory that will be the root directory of the
     archive; ie. we typically chdir into 'root_dir' before creating the
diff --git a/Misc/NEWS b/Misc/NEWS
index b597cdf..c7bf380 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -20,6 +20,8 @@
 Library
 -------
 
+- Issue #8463: added missing reference to bztar in shutil's documentation.
+
 - Issue #8438: Remove reference to the missing "surrogateescape" encoding
   error handler from the new IO library.