diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 76a414d..a862494 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4'
+          ruby-version: '3.4.7'
           bundler-cache: false
       - run: ruby -wc Vagrantfile