Apache Commons UrlValidator - configure to allow umlaut characters

Apache Commons UrlValidator - configure to allow umlaut characters

I would like to validate a long list of URL strings, but some of them
contain umlaut characters, e.g.: ä, à, è, ö, etc.
Is there a way to configure the Apache Commons UrlValidator to accept
these characters?
This test fails (notice the ã):
@Test
public void urlValidatorShouldPassWithUmlaut()
{
// Given
org.apache.commons.validator.routines.UrlValidator validator;
validator = new UrlValidator( new String[] { "http", "https" },
UrlValidator.ALLOW_ALL_SCHEMES );
// When
String url = "http://dbpedia.org/resource/São_Paulo";
// Then
assertThat( validator.isValid( url ), is( true ) );
}
This test passes (ã replaced with a):
@Test
public void urlValidatorShouldPassWithUmlaut()
{
// Given
org.apache.commons.validator.routines.UrlValidator validator;
validator = new UrlValidator( new String[] { "http", "https" },
UrlValidator.ALLOW_ALL_SCHEMES );
// When
String url = "http://dbpedia.org/resource/Sao_Paulo";
// Then
assertThat( validator.isValid( url ), is( true ) );
}
Software version: commons-validator commons-validator 1.4.0