Switch to Ruby 4.0

Author: captn3m0

.github/workflows/jekyll.yml

@@ -36,10 +36,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Ruby
-        # https://github.com/ruby/setup-ruby/releases/tag/v1.207.0
-        uses: ruby/setup-ruby@4a9ddd6f338a97768b8006bf671dfbad383215f4
+        uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4' # Not needed with a .ruby-version file
+          ruby-version: '4.0' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
           cache-version: 0 # Increment this number if you need to re-download cached gems
       - name: Setup Pages

.github/workflows/main.yml

@@ -8,9 +8,10 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - "3.2"
-          - "3.3"
-          - "3.4"
+          - "3.2" # Mar 2026
+          - "3.3" # Mar 2027
+          - "3.4" # Mar 2028
+          - "4.0" # Mar 2029
     steps:
       - uses: actions/checkout@v5
       - name: Set up Ruby
@@ -35,6 +36,6 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.4"
+          ruby-version: "4.0"
           bundler-cache: true
       - uses: rubygems/release-gem@v1