Missing antlr dependency in Maven?

Hi all,

We're noticing that we have to add the correct version of
org.antlr:antlr-runtime as a runtime dependency in our Pig client code in
order to avoid errors like the one linked here:

http://blog.gmane.org/gmane.comp.java.hadoop.pig.user/month=20131201

Am I wrong to think that antlr should be listed as an explicit dependency
for Pig, given the fact that (apparently) it uses antlr to compile scripts?

Thanks,
--Alex