diff --git a/installer/data/mysql/atomicupdate/sessions-from-longtext-to-longblob.perl b/installer/data/mysql/atomicupdate/sessions-from-longtext-to-longblob.perl
new file mode 100644
index 0000000000..0ddca85b5a
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/sessions-from-longtext-to-longblob.perl
@@ -0,0 +1,8 @@
+$DBversion = 'XXX';
+if ( CheckVersion($DBversion) ) {
+    $dbh->do('DELETE FROM sessions');
+    $dbh->do('ALTER TABLE sessions MODIFY a_session LONGBLOB NOT NULL');
+
+    NewVersion( $DBversion, '28489',
+        'Modify sessions.a_session from longtext to longblob' );
+}