diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 8846ec3f0..238347ba3 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@0cb964fd540e0a24c900370abf38a33466142735 # v1.305.0
         with:
-          ruby-version: 3.4.9
+          ruby-version: 4.0.3
 
       - name: Install and Build 🔧
         run: |
diff --git a/.github/workflows/site-build.yml b/.github/workflows/site-build.yml
index 9db9db795..9b55f6b98 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@0cb964fd540e0a24c900370abf38a33466142735 # v1.305.0
         with:
-          ruby-version: 3.4.9
+          ruby-version: 4.0.3
 
       - name: Install and Build 🔧
         run: |