.github/workflows/ruby.yml in ruby-statistics-3.0.2 vs .github/workflows/ruby.yml in ruby-statistics-4.0.0

@@ -1,36 +1,36 @@
 name: Ruby
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   build: # Latest ruby
 
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Ruby 3.1
-      uses: ruby/setup-ruby@v1.146.0
+    - uses: actions/checkout@v4
+    - name: Set up Ruby 3.3
+      uses: ruby/setup-ruby@v1.183.0
       with:
-        ruby-version: 3.1.2
+        ruby-version: 3.3
     - name: Build and test with Rake
       run: |
         gem install bundler
         bundle install --jobs 2 --retry 1
         bundle exec rake
 
-  build_2_7:
+  build_3_2:
 
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Ruby 2.7
-      uses: ruby/setup-ruby@v1.146.0
+    - uses: actions/checkout@v4
+    - name: Set up Ruby 3.2
+      uses: ruby/setup-ruby@v1.183.0
       with:
-        ruby-version: 2.7.6
+        ruby-version: 3.2
     - name: Build and test with Rake
       run: |
         gem install bundler
         bundle install --jobs 2 --retry 1
         bundle exec rake
@@ -38,14 +38,30 @@
   build_3_0:
 
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby 3.0
-      uses: ruby/setup-ruby@v1.146.0
+      uses: ruby/setup-ruby@v1.183.0
       with:
-        ruby-version: 3.0.4
+        ruby-version: 3.0
+    - name: Build and test with Rake
+      run: |
+        gem install bundler
+        bundle install --jobs 2 --retry 1
+        bundle exec rake
+
+  build_3_1:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Ruby 3.1
+      uses: ruby/setup-ruby@v1.183.0
+      with:
+        ruby-version: 3.1
     - name: Build and test with Rake
       run: |
         gem install bundler
         bundle install --jobs 2 --retry 1
         bundle exec rake