diff --git a/ADCP_tools_lib.pl b/ADCP_tools_lib.pl
--- a/ADCP_tools_lib.pl
+++ b/ADCP_tools_lib.pl
@@ -1,15 +1,18 @@
 #======================================================================
 #                    A D C P _ T O O L S _ L I B . P L 
 #                    doc: Tue Jan  5 10:45:47 2016
-#                    dlm: Thu May 26 10:40:42 2016
+#                    dlm: Sun Mar 12 12:09:33 2017
 #                    (c) 2016 A.M. Thurnherr
-#                    uE-Info: 12 25 NIL 0 0 72 0 2 4 NIL ofnI
+#                    uE-Info: 13 51 NIL 0 0 72 0 2 4 NIL ofnI
 #======================================================================
 
 # HISTORY:
 #	Jan  5, 2015: - created
+#	...
+#	Aug 23, 2016: - updated to V1.8
+#	Mar 12, 2017: - updated to V1.9 for LADCP_w 1.3
 
-$ADCP_tools_version = 1.7;
+$ADCP_tools_version = 1.9;
 
 die(sprintf("$0: obsolete ADCP_tools V%.1f; V%.1f required\n",
     $ADCP_tools_version,$ADCP_tools_minVersion))