src/main/resources/db/changeLog-1.9.xml

<?xml version="1.1" encoding="UTF-8" standalone="no"?>
<databaseChangeLog
  xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="
    http://www.liquibase.org/xml/ns/dbchangelog
    http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.10.xsd">

  <changeSet author="mulk" id="1.9-1">
    <addColumn tableName="bookmarks" schemaName="benki">
      <column name="via" type="text">
        <constraints nullable="true"/>
      </column>
    </addColumn>
  </changeSet>

</databaseChangeLog>