diff --git a/oletools/msodde.py b/oletools/msodde.py
index 28d1314..c291ff9 100644
--- a/oletools/msodde.py
+++ b/oletools/msodde.py
@@ -7,6 +7,7 @@ msodde is a script to parse MS Office documents
 
 Supported formats:
 - Word 97-2003 (.doc, .dot), Word 2007+ (.docx, .dotx, .docm, .dotm)
+- Excel 2007+ (.xlsx, .xlsm)  (not .xlsb)
 
 Author: Philippe Lagadec - http://www.decalage.info
 License: BSD, see source code or documentation
@@ -52,12 +53,14 @@ from __future__ import print_function
 # 2017-10-25       CH: - parse doc
 #                  PL: - added logging
 # 2017-11-10       CH: - added field blacklist and corresponding cmd line args
+# 2017-11-23       CH: - added support for xlsx files
 
-__version__ = '0.52dev5'
+__version__ = '0.52dev6'
 
 #------------------------------------------------------------------------------
 # TODO: field codes can be in headers/footers/comments - parse these
-# TODO: add xlsx support
+# TODO: generalize behaviour for xlsx: find all external links (maybe rename
+#       command line flag for "blacklist" to "find all suspicious" or so)
 
 #------------------------------------------------------------------------------
 # REFERENCES: