diff --git a/installer/data/mysql/kohastructure.sql b/installer/data/mysql/kohastructure.sql
index eb73cc5e51..efb2f9a87d 100644
--- a/installer/data/mysql/kohastructure.sql
+++ b/installer/data/mysql/kohastructure.sql
@@ -24,7 +24,7 @@ CREATE TABLE `auth_header` (
   `authid` bigint(20) unsigned NOT NULL auto_increment,
   `authtypecode` varchar(10) NOT NULL default '',
   `datecreated` date default NULL,
-  `datemodified` date default NULL,
+  `modification_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   `origincode` varchar(20) default NULL,
   `authtrees` mediumtext,
   `marc` blob,
diff --git a/installer/data/mysql/updatedatabase.pl b/installer/data/mysql/updatedatabase.pl
index a354b9fae5..5229df6134 100755
--- a/installer/data/mysql/updatedatabase.pl
+++ b/installer/data/mysql/updatedatabase.pl
@@ -10277,6 +10277,20 @@ if ( CheckVersion($DBversion) ) {
     SetVersion ($DBversion);
 }
 
+$DBversion = "3.19.00.XXX";
+if ( CheckVersion($DBversion) ) {
+    $dbh->do(q|
+        ALTER TABLE auth_header
+        CHANGE COLUMN datemodified modification_time TIMESTAMP NOT NULL default CURRENT_TIMESTAMP
+    |);
+    $dbh->do(q|
+        ALTER TABLE auth_header
+        CHANGE COLUMN modification_time modification_time TIMESTAMP NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP
+    |);
+    print "Upgrade to $DBversion done (Bug 11165: Update auth_header.datemodified when updated)\n";
+    SetVersion ($DBversion);
+}
+
 # DEVELOPER PROCESS, search for anything to execute in the db_update directory
 # SEE bug 13068
 # if there is anything in the atomicupdate, read and execute it.