diff --git a/Vagrantfile.d/provision.sh b/Vagrantfile.d/provision.sh
index acfc547..eb9080d 100644
--- a/Vagrantfile.d/provision.sh
+++ b/Vagrantfile.d/provision.sh
@@ -1,34 +1,34 @@
 # Install and configure Puppet and Puppetserver.
 export DEBIAN_FRONTEND=noninteractive
 
-wget https://apt.puppetlabs.com/puppet5-release-xenial.deb
-dpkg -i puppet5-release-xenial.deb
+wget https://apt.puppetlabs.com/puppet6-release-xenial.deb
+dpkg -i puppet6-release-xenial.deb
 apt-get update
 apt-get install -y apt-transport-https
 apt-get install -y puppet-agent puppetserver
 
 # REF: https://tickets.puppetlabs.com/browse/SERVER-528
 service puppet stop
 service puppetserver stop
 rm -rf /etc/puppetlabs/puppet/ssl/private_keys/*
 rm -rf /etc/puppetlabs/puppet/ssl/certs/*
 echo 'autosign = true' >> /etc/puppetlabs/puppet/puppet.conf
 service puppetserver start
 
 # Puppet agent looks for the server called "puppet" by default.
 # In this case, we want that to be us (the loopback address).
 echo '127.0.0.1 localhost puppet vagrant' > /etc/hosts
 
 # Install puppet-elastic-stack dependencies.
 modules=(
   puppet-yum
   puppet-zypprepo
   puppetlabs-apt
   puppetlabs-yumrepo_core
 )
 
 for module in ${modules[@]}; do
   /opt/puppetlabs/bin/puppet module install \
   --target-dir=/etc/puppetlabs/code/environments/production/modules \
   ${module}
 done