diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 582fdca37..9d3476cb4 100644
--- a/.github/workflows/pr-build.yml
+++ b/.github/workflows/pr-build.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Set up Ruby 3.2
         uses: ruby/setup-ruby@7372622e62b60b3cb750dcd2b9e32c247ffec26a # v1.302.0
         with:
-          ruby-version: 3.4.9
+          ruby-version: 4.0.2
 
       - name: Install and Build 🔧
         run: |
diff --git a/.github/workflows/site-build.yml b/.github/workflows/site-build.yml
index 14ae49243..3ba309fde 100644
--- a/.github/workflows/site-build.yml
+++ b/.github/workflows/site-build.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Set up Ruby 3.2
         uses: ruby/setup-ruby@7372622e62b60b3cb750dcd2b9e32c247ffec26a # v1.302.0
         with:
-          ruby-version: 3.4.9
+          ruby-version: 4.0.2
 
       - name: Install and Build 🔧
         run: |