How to get SoapUI to work with TLS1.2 and restricted ciphers?

I keep getting handshake failed errors when I restrict our infrastructure to just TLS1.2 and a narrow list of ciphers.  I've tried adding the following line to soapui.bat:

set JAVA_OPTS=%JAVA_OPTS% -Dsoapui.https.protocols="TLSv1.2"

That didn't seem to help.