soapui 5.5.0 free verison - postgresql connection

Hi, 

I am trying to connect to postgresql database with the soapui free verision. I got the driver downloaded and placed it in the <soapuiinstaller>/bin/ext folder 

The file i download is postgresql-42.2.6 version.

When i try to do the test connection  - i am getting the below error

Can't get the Connection for specified properties; java.sql.SQLException: No suitable driver found for dbc:postgresql://<hostname>:5342/mscpsit?user=username&password=password

Can you please advise.

nmrao  - Any smart solution please 

Thanks

Kalyan