If you are using Java 6 then you should use the JDBC 4.0 version. If you are using a Java version older than 6 then you will need to use a JDBC3 version of the driver, which will by necessity not be current, found in Other Versions. PostgreSQL JDBC 4.2 Driver, 42.2.23. PostgreSQL JDBC 4.1 Driver, 42.2.23.jre7. PostgreSQL JDBC 4.0 Driver, 42.2.