--- a/eric6/E5XML/Config.py	Sun Mar 14 19:59:27 2021 +0100
+++ b/eric6/E5XML/Config.py	Mon Mar 15 17:55:48 2021 +0100
@@ -23,7 +23,7 @@
 userProjectFileFormatVersion = "4.0"
 
 # version number of the project session file
-sessionFileFormatVersion = "6.3"
+sessionFileFormatVersion = "6.4"
 
 # version number of the shortcuts file
 shortcutsFileFormatVersion = "3.6"