diff --git a/docs.tar.gz b/docs.tar.gz
index 94f8011..5201807 100644
Binary files a/docs.tar.gz and b/docs.tar.gz differ
diff --git a/lib/PCAP.pm b/lib/PCAP.pm
index 7f3cebe..24cdb61 100644
--- a/lib/PCAP.pm
+++ b/lib/PCAP.pm
@@ -26,7 +26,7 @@ use base 'Exporter';
 use FindBin qw($Bin);
 use File::Which qw(which);
 
-our $VERSION = '2.1.2';
+our $VERSION = '2.1.3';
 our @EXPORT = qw($VERSION _which);
 
 const my $LICENSE =>
@@ -72,9 +72,10 @@ const my %UPGRADE_PATH => ( # all earlier versions need full upgrade
                             '1.13.2'  => 'biobambam,samtools',
                             '1.14.0'  => 'biobambam,samtools',
                             '2.0.0'  => 'biobambam',
-                            '2.0.1' => '',
-                            '2.1.0' => '',
-                            '2.1.2' => '',
+                            '2.0.1' => 'biobambam,samtools',
+                            '2.1.0' => 'biobambam,samtools',
+                            '2.1.2' => 'biobambam,samtools',
+                            '2.1.3' => 'biobambam,samtools',
                           );
 
 sub license {
diff --git a/setup.sh b/setup.sh
index 3b60647..4270a19 100755
--- a/setup.sh
+++ b/setup.sh
@@ -2,16 +2,16 @@
 
 SOURCE_BWA="https://github.com/lh3/bwa/archive/0.7.12.tar.gz"
 
-SOURCE_SAMTOOLS="https://github.com/samtools/samtools/releases/download/1.3/samtools-1.3.tar.bz2"
+SOURCE_SAMTOOLS="https://github.com/samtools/samtools/releases/download/1.3.1/samtools-1.3.1.tar.bz2"
 
 # for bamstats
-SOURCE_HTSLIB="https://github.com/samtools/htslib/archive/1.2.1.tar.gz"
+SOURCE_HTSLIB="https://github.com/samtools/htslib/archive/1.3.1.tar.gz"
 
 # for bigwig
 SOURCE_JKENT_BIN="https://github.com/ENCODE-DCC/kentUtils/raw/master/bin/linux.x86_64"
 
 # for biobambam
-SOURCE_BBB_BIN_DIST="https://github.com/gt1/biobambam2/releases/download/2.0.35-release-20160330111451/biobambam2-2.0.35-release-20160330111451-x86_64-etch-linux-gnu.tar.gz"
+SOURCE_BBB_BIN_DIST="https://github.com/gt1/biobambam2/releases/download/2.0.40-release-20160425112514/biobambam2-2.0.40-release-20160425112514-x86_64-etch-linux-gnu.tar.gz"
 
 BIODBHTS_INSTALL="https://raw.githubusercontent.com/Ensembl/Bio-HTS/master/INSTALL.pl"
 
@@ -50,7 +50,14 @@ fi
 
 set -e
 
-CPU=`cat /proc/cpuinfo | egrep "^processor" | wc -l`
+CPU=`grep -c ^processor /proc/cpuinfo`
+if [ $? -eq 0 ]; then
+  if [ "$CPU" -gt "6" ]; then
+    CPU=6
+  fi
+else
+  CPU=1
+fi
 echo "Max compilation CPUs set to $CPU"
 
 INST_PATH=$1
@@ -175,22 +182,21 @@ fi
 if [[ ",$COMPILE," == *,biobambam,* ]] ; then
   echo -n "Building biobambam ..."
   if [ -e $SETUP_DIR/biobambam.success ]; then
-    echo -n " previously installed ..."
+    echo " previously installed ..."
   else
-      cd $SETUP_DIR
-      get_distro "biobambam" $SOURCE_BBB_BIN_DIST
-      mkdir -p biobambam
-      tar --strip-components 1 -C biobambam -zxf biobambam.tar.gz
-      mkdir -p $INST_PATH/bin $INST_PATH/etc $INST_PATH/lib $INST_PATH/share
-      rm -f biobambam/bin/curl # don't let this file in SSL doesn't work
-      cp -r biobambam/bin/* $INST_PATH/bin/.
-      cp -r biobambam/etc/* $INST_PATH/etc/.
-      cp -r biobambam/lib/* $INST_PATH/lib/.
-      cp -r biobambam/share/* $INST_PATH/share/.
-      touch $SETUP_DIR/biobambam.success
+    cd $SETUP_DIR
+    get_distro "biobambam" $SOURCE_BBB_BIN_DIST
+    mkdir -p biobambam
+    tar --strip-components 1 -C biobambam -zxf biobambam.tar.gz
+    mkdir -p $INST_PATH/bin $INST_PATH/etc $INST_PATH/lib $INST_PATH/share
+    rm -f biobambam/bin/curl # don't let this file in SSL doesn't work
+    cp -r biobambam/bin/* $INST_PATH/bin/.
+    cp -r biobambam/etc/* $INST_PATH/etc/.
+    cp -r biobambam/lib/* $INST_PATH/lib/.
+    cp -r biobambam/share/* $INST_PATH/share/.
+    touch $SETUP_DIR/biobambam.success
+    echo
   fi
-  export PERL5LIB="$PERLROOT"
-  echo
 else
   echo "biobambam - No change between PCAP versions"
 fi
diff --git a/t/3_external_progs.t b/t/3_external_progs.t
index da6d135..c17ac4f 100644
--- a/t/3_external_progs.t
+++ b/t/3_external_progs.t
@@ -13,9 +13,9 @@ use Data::Dumper;
 use version 0.77;
 
 const my @REQUIRED_PROGRAMS => qw(bamcollate2 bammarkduplicates2 bamsort bwa samtools);
-const my $BIOBAMBAM2_VERSION => '2.0.33';
+const my $BIOBAMBAM2_VERSION => '2.0.40';
 const my $BWA_VERSION => '0.7.12';
-const my $SAMTOOLS_VERSION => '1.3';
+const my $SAMTOOLS_VERSION => '1.3.1';
 
 # can't put regex in const
 my %EXPECTED_VERSION = (