--- a/docs/HISTORY.txt	Sat Jan 12 18:34:49 2019 +0100
+++ b/docs/HISTORY.txt	Sun Jan 13 10:13:38 2019 +0100
@@ -1,6 +1,10 @@
 History
 =======
 
+0.1.38
+------
+ - added IAttributeAnnotatable marker interface to thesaurus term "HTML" extension interface
+
 0.1.37
 ------
  - updated workflow to add visible states