diff --git a/CHANGES.md b/CHANGES.md
index 1b15276..190ba88 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # CHANGES
 
+## 3.7.0
+
+* Update base image to Ubuntu 20.04
+
 ## 3.6.1
 
 * Missing command line arg description in `addVagrentContext.pl`
diff --git a/Dockerfile b/Dockerfile
index 7355805..c214c40 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:16.04 as builder
+FROM ubuntu:20.04 as builder
 
 USER root
 
@@ -6,9 +6,9 @@ USER root
 # ensure updated in setup.sh too
 ENV VER_BEDTOOLS="2.28.0"
 ENV VER_VCFTOOLS="0.1.16"
-ENV VER_BIODBHTS="2.10"
-ENV VER_HTSLIB="1.9"
-ENV VER_SAMTOOLS="1.9"
+ENV VER_BIODBHTS="3.01"
+ENV VER_HTSLIB="1.10.2"
+ENV VER_SAMTOOLS="1.10"
 
 RUN apt-get -yq update
 RUN apt-get install -yq --no-install-recommends \
@@ -49,7 +49,7 @@ RUN bash build/opt-build.sh $OPT
 COPY . .
 RUN bash build/opt-build-local.sh $OPT
 
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 
 LABEL maintainer="cgphelp@sanger.ac.uk" \
       uk.ac.sanger.cgp="Cancer, Ageing and Somatic Mutation, Wellcome Trust Sanger Institute" \
diff --git a/MANIFEST b/MANIFEST
index c7d9ac4..aa811b1 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1,11 +1,16 @@
+.dockerignore
 .travis.yml
+bin/addVagrentContext.pl
 bin/Admin_CacheFileBuilder.pl
 bin/Admin_EnsemblReferenceFileGenerator.pl
 bin/Admin_EnsemblTranscriptFilter.pl
 bin/Admin_GeneRegionBedDumper.pl
 bin/AnnotateVcf.pl
 bin/cpanm
+build/opt-build-local.sh
+build/opt-build.sh
 CHANGES.md
+Dockerfile
 docs.tar.gz
 lib/Sanger/CGP/Vagrent.pm
 lib/Sanger/CGP/Vagrent/Annotators/AbstractAnnotator.pm
diff --git a/README.md b/README.md
index 2490a44..6ef4763 100644
--- a/README.md
+++ b/README.md
@@ -40,11 +40,13 @@ Please be aware that this expects basic C compilation libraries and tools to be
 #### Cutting the release
 1. Update `lib/Sanger/CGP/Vagrent.pm` to the correct version.
 2. Update `CHANGES.md` to show major items.
-3. Run `./prerelease.sh`
-4. Check all tests and coverage reports are acceptable.
-5. Commit the updated docs tree and updated module/version.
-6. Push commits.
-7. Use the GitHub tools to draft a release.
+3. Run `./setup.sh /path/to/local/inst` to create a local installation
+4. Ensure your build enviroment contains Devel::Cover, Template and Pod::Coverage::CountParents. These can be loaded at the Sanger with `module load perl-testlibs`
+5. Run `./prerelease.sh /path/to/local/inst`
+6. Check all tests and coverage reports are acceptable.
+7. Commit the updated docs tree and updated module/version.
+8. Push commits.
+9. Use the GitHub tools to draft a release.
 
 LICENCE
 =======
diff --git a/bin/Admin_CacheFileBuilder.pl b/bin/Admin_CacheFileBuilder.pl
index 92a61d3..a4d1eac 100644
--- a/bin/Admin_CacheFileBuilder.pl
+++ b/bin/Admin_CacheFileBuilder.pl
@@ -826,7 +826,7 @@ sub option_builder {
 
 =head1 NAME
 
-Admin_CacheFileBuilder.pl - Generates the Vagrent reference data set from the supplied GFF£/GTF and Fasta files
+Admin_CacheFileBuilder.pl - Generates the Vagrent reference data set from the supplied GFF/GTF and Fasta files
 
 =head1 SYNOPSIS
 
diff --git a/docs.tar.gz b/docs.tar.gz
index e0ea697..85e41e3 100644
Binary files a/docs.tar.gz and b/docs.tar.gz differ
diff --git a/lib/Sanger/CGP/Vagrent.pm b/lib/Sanger/CGP/Vagrent.pm
index 8192e3f..cd67a90 100644
--- a/lib/Sanger/CGP/Vagrent.pm
+++ b/lib/Sanger/CGP/Vagrent.pm
@@ -1,7 +1,7 @@
 package Sanger::CGP::Vagrent;
 
 ##########LICENCE##########
-# Copyright (c) 2014-2019 Genome Research Ltd.
+# Copyright (c) 2014-2020 Genome Research Ltd.
 #
 # Author: CASM/Cancer IT - cgphelp@sanger.ac.uk
 #
@@ -26,7 +26,7 @@ use strict;
 use Const::Fast qw(const);
 
 use base 'Exporter';
-our $VERSION = '3.6.1';
+our $VERSION = '3.7.0';
 our @EXPORT = qw($VERSION);
 
 1;
diff --git a/prerelease.sh b/prerelease.sh
index bd1e009..f38d707 100755
--- a/prerelease.sh
+++ b/prerelease.sh
@@ -27,6 +27,21 @@ set -eu # exit on first error or undefined value in subtitution
 # get current directory
 INIT_DIR=`pwd`
 
+if [ "$#" -ne "1" ] ; then
+  echo "Please provide the installation path"
+  exit 1
+fi
+
+# Installation path from setup.sh
+INST_PATH=$1
+
+# make sure tools installed can see the install loc of libraries
+set +u
+export PATH=`echo $INST_PATH/bin:$PATH | perl -pe 's/:\$//;'`
+export PERL5LIB=`echo $INST_PATH/lib/perl5:$PERL5LIB | perl -pe 's/:\$//;'`
+set -u
+
+
 rm -rf blib
 
 # get location of this file
diff --git a/setup.sh b/setup.sh
index 336aab8..9cc5425 100755
--- a/setup.sh
+++ b/setup.sh
@@ -25,9 +25,9 @@
 # ensure updated in Dockerfile too
 export VER_BEDTOOLS="2.28.0"
 export VER_VCFTOOLS="0.1.16"
-export VER_BIODBHTS="2.10"
-export VER_HTSLIB="1.9"
-export VER_SAMTOOLS="1.9"
+export VER_BIODBHTS="3.01"
+export VER_HTSLIB="1.10.2"
+export VER_SAMTOOLS="1.10"
 
 if [[ ($# -ne 1) ]] ; then
   echo "Please provide an installation path dependencies expected in PATH/PERL5LIB, e.g."