diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 2ee9dd730..c1b8d3833 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@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1.295.0
         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 f4d3fd654..1f98c69a2 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@319994f95fa847cf3fb3cd3dbe89f6dcde9f178f # v1.295.0
         with:
-          ruby-version: 3.4.9
+          ruby-version: 4.0.2
 
       - name: Install and Build 🔧
         run: |