Cannot create column with type “TIMESTAMP WITHOUT TIME ZONE” in PostgreSQL

Question

when i tried to create a column with the data type "TIMESTAMP WITHOUT TIME ZONE" in postgresql it's always created in the database as "TIMESTAMP WITH TIME ZONE" , so is there's any workarounds or solutions for this problem ?

<addColumn tableName="myTable">
            <column name="date_added" type="TIMESTAMP WITHOUT TIME ZONE">
            <constraints nullable="false" />
            </column>
 </addColumn>

btw, this issue is on jira: http://liquibase.jira.com/browse/CORE-877