diff --git a/.github/workflows/build_vagrant.yml b/.github/workflows/build_vagrant.yml
index 8b757077e2..8e3b12ceab 100644
--- a/.github/workflows/build_vagrant.yml
+++ b/.github/workflows/build_vagrant.yml
@@ -8,6 +8,11 @@ on:
     branches:
     - master
 
+# Cancel existing runs if user makes another push.
+concurrency:
+  group: "${{ github.ref }}"
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 permissions:
   contents: read
 
@@ -51,6 +56,7 @@ jobs:
         rm -f id_rsa.pub id_rsa
         # Copy the machine's ssh key for the VMs to use, after removing prior files
         ssh-keygen -q -f $PWD/id_rsa -t rsa -N ''
+        vagrant plugin install vagrant-vbguest
         vagrant up
         vagrantPORT=$(vagrant port | grep host | awk '{ print $4 }')
         rm -f playbooks/AdoptOpenJDK_Unix_Playbook/hosts.unx
@@ -63,4 +69,4 @@ jobs:
     - name: Run Ansible Playbook
       run: |
         cd ansible
-        ansible-playbook -i playbooks/AdoptOpenJDK_Unix_Playbook/hosts.unx -u vagrant -b --skip-tags adoptopenjdk,cups playbooks/AdoptOpenJDK_Unix_Playbook/main.yml
+        ansible-playbook -i playbooks/AdoptOpenJDK_Unix_Playbook/hosts.unx --ssh-common-args='-o StrictHostKeyChecking=no -o HostKeyAlgorithms=ssh-rsa' -u vagrant -b --skip-tags adoptopenjdk,cups playbooks/AdoptOpenJDK_Unix_Playbook/main.yml
diff --git a/ansible/vagrant/Vagrantfile.Solaris10 b/ansible/vagrant/Vagrantfile.Solaris10
index bacd859546..94a929d7b3 100644
--- a/ansible/vagrant/Vagrantfile.Solaris10
+++ b/ansible/vagrant/Vagrantfile.Solaris10
@@ -2,7 +2,8 @@
 # vi: set ft=ruby :
 
 $script = <<SCRIPT
-sudo /opt/csw/bin/pkgutil -y -i python
+# Install Python 2.7
+sudo /opt/csw/bin/pkgutil -y -i python27
 # Put the host machine's IP into the authorised_keys file on the VM
 if [ -r /vagrant/id_rsa.pub ]; then
         mkdir -p $HOME/.ssh && cat /vagrant/id_rsa.pub >> $HOME/.ssh/authorized_keys