diff --git a/README.rst b/README.rst
index 17e1669..f6ecf30 100644
--- a/README.rst
+++ b/README.rst
@@ -22,6 +22,10 @@ You can define the course sources yourself.
 Changes
 =======
 
+*6.8.26 - 06.12.2023*
+
+- add: columns optional
+
 *6.8.25 - 01.12.2023*
 
 - code/speed optimized
diff --git a/tryton.cfg b/tryton.cfg
index 745c960..b7b3c7d 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=6.8.25
+version=6.8.26
 depends:
     ir
     res