Index: Lib/shutil.py
===================================================================
--- Lib/shutil.py	(revision 80206)
+++ Lib/shutil.py	(working copy)
@@ -524,7 +524,7 @@
 
     '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
Index: Doc/library/shutil.rst
===================================================================
--- Doc/library/shutil.rst	(revision 80206)
+++ Doc/library/shutil.rst	(working copy)
@@ -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