diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 702ae34a..2319d4b6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -72,7 +72,7 @@ jobs:
       - if: matrix.ruby == 'system'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2.9
+          ruby-version: 3.4.8
       - run: bazel build ...
       - run: bazel run lib/gem:add-numbers 2
       - run: bazel run lib/gem:print-version
@@ -171,7 +171,7 @@ jobs:
       - if: matrix.ruby == 'system'
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2.9
+          ruby-version: 3.4.8
       - run: ./do_test
 
   examples-rails: