--- a/make-rules/shared-macros.mk	Thu Aug 06 15:11:29 2015 -0700
+++ b/make-rules/shared-macros.mk	Fri Aug 07 13:43:38 2015 -0700
@@ -532,11 +532,12 @@
 # Not necessarily the system's default version, i.e. /usr/bin/perl
 PERL_VERSION ?=  5.12
 
-PERL_VERSIONS = 5.12 5.16
+PERL_VERSIONS = 5.12 5.20
 
 PERL.5.12 =     /usr/perl5/5.12/bin/perl
 PERL.5.16 =	/usr/perl5/5.16/bin/perl
 PERL.5.12-mt =	/usr/perl5/5.12/bin/perl-threaded
+PERL.5.20 =     /usr/perl5/5.20/bin/perl
 
 PERL =          $(PERL.$(PERL_VERSION))