diff --git a/DeDRM_plugin/__init__.py b/DeDRM_plugin/__init__.py
index d2cbc2b..303bffd 100644
--- a/DeDRM_plugin/__init__.py
+++ b/DeDRM_plugin/__init__.py
@@ -7,7 +7,7 @@ from __future__ import with_statement
 # Copyright © 2008-2020 Apprentice Harper et al.
 
 __license__   = 'GPL v3'
-__version__ = '6.8.0'
+__version__ = '6.8.1'
 __docformat__ = 'restructuredtext en'
 
 
@@ -71,6 +71,7 @@ __docformat__ = 'restructuredtext en'
 #   6.6.3 - More cleanup of kindle book names and start of support for .kinf2018
 #   6.7.0 - Handle new library in calibre.
 #   6.8.0 - Full support for .kinf2018 and new KFX encryption (Kindle for PC/Mac 2.5+)
+#   6.8.1 - Kindle key fix for Mac OS X Big Syr
 
 """
 Decrypt DRMed ebooks.
diff --git a/DeDRM_plugin/kindlekey.py b/DeDRM_plugin/kindlekey.py
index c496266..a4989df 100644
--- a/DeDRM_plugin/kindlekey.py
+++ b/DeDRM_plugin/kindlekey.py
@@ -7,7 +7,7 @@ from __future__ import with_statement
 # Copyright © 2008-2020 Apprentice Harper et al.
 
 __license__ = 'GPL v3'
-__version__ = '2.7'
+__version__ = '2.8'
 
 # Revision history:
 #  1.0   - Kindle info file decryption, extracted from k4mobidedrm, etc.
@@ -30,6 +30,7 @@ __version__ = '2.7'
 #  2.5   - Final Fix for Windows user names with non-ascii characters, thanks to oneofusoneofus
 #  2.6   - Start adding support for Kindle 1.25+ .kinf2018 file
 #  2.7   - Finish .kinf2018 support, PC & Mac by Apprentice Sakuya
+#  2.8   - Fix for Mac OS X Big Sur
 
 
 """