diff --git a/Basic/gdsii_version.m b/Basic/gdsii_version.m
index 36e5eca..92741c5 100644
--- a/Basic/gdsii_version.m
+++ b/Basic/gdsii_version.m
@@ -16,8 +16,8 @@
 %
 
     % toolbox version and version date
-    tb_version = '138';
-    tb_date = '2016-November-06';
+    tb_version = '139';
+    tb_date = '2016-November-07';
     ltb_ver = [tb_version, '  (', tb_date, ')'];
     if exist('OCTAVE_VERSION')
         interpreter = 'Octave';
diff --git a/ChangeLog b/ChangeLog
index b71bbc8..0a33e59 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,13 @@
+2016-November-07
+- version 139
+- much improved (faster) 'subsref' methods for gds_library and gds_structure 
+  objects.
+- improved the speed of 'layerinfo' methods by eliminating element indexing.
 - new 'layer' method for gds_element objects to query layer/data type, which
   is faster than field indexing.
 
 2016-November-05
-- version 137
+- version 137/138
 - return [] in 'get_element_data' if an element does not have a requested 
   property instead of throwing an error.
 - improved 'subsref' methods for gds_library and gds_structure objects that