diff --git a/label-dispatcher/action.yaml b/label-dispatcher/action.yaml
index fdaf2be..bd36c70 100644
--- a/label-dispatcher/action.yaml
+++ b/label-dispatcher/action.yaml
@@ -59,7 +59,7 @@ runs:
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1.295.0
       with:
-        ruby-version: '3.4.9'
+        ruby-version: '4.0.2'
         bundler-cache: true
         working-directory: deploy-actions/action-scripts