diff --git a/.github/workflows/pr_tests.yml b/.github/workflows/pr_tests.yml
index 092c284..0eb570f 100644
--- a/.github/workflows/pr_tests.yml
+++ b/.github/workflows/pr_tests.yml
@@ -35,7 +35,7 @@ jobs:
       - name: "Install Ruby 2.7"
         uses: ruby/setup-ruby@v1  # ruby/setup-ruby@ec106b438a1ff6ff109590de34ddc62c540232e0
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - run: "bundle exec rake syntax"
 
@@ -47,7 +47,7 @@ jobs:
       - name: "Install Ruby 2.7"
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - run: "bundle exec rake lint"
       - run: "bundle exec rake metadata_lint"
@@ -62,7 +62,7 @@ jobs:
       - name: "Install Ruby 2.7"
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - run: |
           bundle show
@@ -76,7 +76,7 @@ jobs:
       - name: 'Install Ruby 2.7'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - run: bundle exec rake check:dot_underscore
       - run: bundle exec rake check:test_file
@@ -89,7 +89,7 @@ jobs:
       - name: 'Install Ruby 2.7'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - name: 'Tags and changelogs'
         run: |
diff --git a/.github/workflows/tag_deploy.yml b/.github/workflows/tag_deploy.yml
index 0c91ff1..5c6df63 100644
--- a/.github/workflows/tag_deploy.yml
+++ b/.github/workflows/tag_deploy.yml
@@ -55,7 +55,7 @@ jobs:
           clean: true
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - run: bundle exec rake pkg:check_version
       - run: bundle exec rake pkg:compare_latest_tag
@@ -180,7 +180,7 @@ jobs:
           clean: true
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 4.0.5
           bundler-cache: true
       - name: Build Puppet module (PDK)
         run: bundle exec pdk build --force
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4e7059d..a197a76 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -227,35 +227,35 @@ variables:
 #-----------------------------------------------------------------------
 
 .pup_5_x: &pup_5_x
-  image: 'ruby:2.4'
+  image: 'ruby:4.0'
   variables:
     PUPPET_VERSION: '~> 5.0'
     BEAKER_PUPPET_COLLECTION: 'puppet5'
     MATRIX_RUBY_VERSION: '2.4'
 
 .pup_5_pe: &pup_5_pe
-  image: 'ruby:2.4'
+  image: 'ruby:4.0'
   variables:
     PUPPET_VERSION: '5.5.22'
     BEAKER_PUPPET_COLLECTION: 'puppet5'
     MATRIX_RUBY_VERSION: '2.4'
 
 .pup_6_x: &pup_6_x
-  image: 'ruby:2.5'
+  image: 'ruby:4.0'
   variables:
     PUPPET_VERSION: '~> 6.0'
     BEAKER_PUPPET_COLLECTION: 'puppet6'
     MATRIX_RUBY_VERSION: '2.5'
 
 .pup_6_pe: &pup_6_pe
-  image: 'ruby:2.5'
+  image: 'ruby:4.0'
   variables:
     PUPPET_VERSION: '6.18.0'
     BEAKER_PUPPET_COLLECTION: 'puppet6'
     MATRIX_RUBY_VERSION: '2.5'
 
 .pup_7_x: &pup_7_x
-  image: 'ruby:2.7'
+  image: 'ruby:4.0'
   variables:
     PUPPET_VERSION: '~> 7.0'
     BEAKER_PUPPET_COLLECTION: 'puppet7'