--- a/docs/HISTORY.txt	Mon Sep 11 14:32:50 2017 +0200
+++ b/docs/HISTORY.txt	Mon Sep 11 15:09:16 2017 +0200
@@ -1,6 +1,11 @@
 History
 =======
 
+0.1.5
+-----
+ - added 'principal' parameter in workflow interfaces
+ - updated workflow history management
+
 0.1.4
 -----
  - updated workflow publication interface