diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 0a55ae939..edc8c71b4 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@dffb23f65a78bba8db45d387d5ea1bbd6be3ef18 # v1.293.0
         with:
-          ruby-version: 3.4.9
+          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 f4d093726..2e1b6800f 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@dffb23f65a78bba8db45d387d5ea1bbd6be3ef18 # v1.293.0
         with:
-          ruby-version: 3.4.9
+          ruby-version: 4.0.1
 
       - name: Install and Build 🔧
         run: |