diff --git a/.github/workflows/auto-update.yml b/.github/workflows/auto-update.yml
index f2b906b..059fb5c 100644
--- a/.github/workflows/auto-update.yml
+++ b/.github/workflows/auto-update.yml
@@ -10,7 +10,7 @@ jobs:
     steps:
     - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
     - name: Set up Ruby
-      uses: ruby/setup-ruby@89f90524b88a01fe6e0b732220432cc6142926af # v1.313.0
+      uses: ruby/setup-ruby@d45b1a4e94b71acab930e56e79c6aa188764e7f9 # v1.316.0
       with:
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: update jpostcode data