diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index baa45d9..cbcc85f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,9 +15,9 @@ jobs:
      #  4.0.0 is not supported yet
      #   ruby-version: ['2.7.4','3.1.0','4.0.0']
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Ruby ${{ matrix.ruby-version }}
-        uses: ruby/setup-ruby@359bebbc29cbe6c87da6bc9ea3bc930432750108
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
       - name: Install dependencies
@@ -32,3 +32,15 @@ jobs:
         env:
           SERPAPI_KEY: ${{ secrets.SERPAPI_KEY }}
         run: bundle exec rake oobt
+      - name: Run example with ruby 2.7.8
+        uses: ruby/setup-ruby@v1
+        if: matrix.ruby-version == '3.1.0'
+        with:
+          ruby-version: '2.7.8'
+      - name: Install and run demo 2.7.8
+        if: matrix.ruby-version == '3.1.0'
+        env:
+          SERPAPI_KEY: ${{ secrets.SERPAPI_KEY }}
+        run: |
+          gem install ./serpapi-*.gem
+          ruby demo/demo.rb
diff --git a/.gitignore b/.gitignore
index 00f8b34..0f32379 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,9 +30,6 @@ test.rb
 ## Text Editor
 .vscode
 
-Gemfile.lock
-build_table.rb
-
 # local script only
 /script
 README_ruby_EXAMPLE_SECTION.md
diff --git a/demo/demo.rb b/demo/demo.rb
index a0af3ec..3b9add1 100644
--- a/demo/demo.rb
+++ b/demo/demo.rb
@@ -9,6 +9,8 @@
 require 'pp'
 require 'serpapi'
 
+puts "SerpApi Ruby Client Example with Ruby version: #{RUBY_VERSION}"
+
 # client initialization with default parameters
 client = SerpApi::Client.new(
   engine: 'google',