diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 245517efc..4fc53d455 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@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1.288.0
         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 ee1355437..214d67b67 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@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1.288.0
         with:
-          ruby-version: 3.4.8
+          ruby-version: 4.0.1
 
       - name: Install and Build 🔧
         run: |