diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d0add20..3f1ce4c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,12 +20,12 @@ jobs:
         ruby_version:
         - '2.7'
         - '3.3'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     container: ruby:${{ matrix.ruby_version }}-slim
     steps:
     - name: checkout
-      uses: actions/checkout@v3
-    - name: install some pre-requisite packages
+      uses: actions/checkout@v4
+    - name: install some prerequisite packages
       run: apt-get update && apt-get install -y cmake pkg-config
     - name: bundler install
       run: bundle install --retry=3
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 3a22832..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,5 +0,0 @@
-# PuppetCheck: automated rake testing in reproducible environment
-FROM fedora:36
-RUN dnf install ruby -y && gem install --no-document puppet rubocop reek puppet-lint rspec rake octocatalog-diff
-COPY / .
-ENTRYPOINT ["rake"]
diff --git a/Vagrantfile b/Vagrantfile
index aa72dd5..522315e 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -1,6 +1,6 @@
 # PuppetCheck: testing gem build, install, and execution
 Vagrant.configure(2) do |config|
-  config.vm.box = 'debian/bullseye64'
+  config.vm.box = 'debian/bookworm64'
 
   config.vm.provision 'shell', inline: <<-SHELL
     cd /vagrant
diff --git a/puppet-check.gemspec b/puppet-check.gemspec
index b4a8faf..49f70b3 100644
--- a/puppet-check.gemspec
+++ b/puppet-check.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = 'puppet-check'
-  spec.version       = '2.3.0'
+  spec.version       = '2.3.1'
   spec.authors       = ['Matt Schuchard']
   spec.description   = 'Puppet Check is a gem that provides a comprehensive, streamlined, and efficient analysis of the syntax, style, and validity of your entire Puppet code and data.'
   spec.summary       = 'A streamlined comprehensive set of checks for your entire Puppet code and data'