source not found in travis

build.sh

@@ -5,6 +5,6 @@ cp -v cocktail.conf.smp cocktail.conf
 curl -L https://cpanmin.us | perl - App::cpanminus
 ~/perl5/bin/cpanm --local-lib=~/perl5 local::lib
 perl -I ~/perl5/lib/perl5/ -Mlocal::lib >> .bashrc
-source .bashrc
+. ./.bashrc
 ~/perl5/bin/cpanm URI::Encode Etherpad Config::YAML IO::Socket::SSL