diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 20d763916..fb709f02b 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@708024e6c902387ab41de36e1669e43b5ee7085e # v1.283.0
         with:
-          ruby-version: 3.4.8
+          ruby-version: 4.0.1
 
       - name: Install and Build 🔧
         run: |
diff --git a/.github/workflows/site-build.yml b/.github/workflows/site-build.yml
index 2470f5dbe..5e52ec0d3 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@708024e6c902387ab41de36e1669e43b5ee7085e # v1.283.0
         with:
-          ruby-version: 3.4.8
+          ruby-version: 4.0.1
 
       - name: Install and Build 🔧
         run: |