diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index db30bbe..5b7bf72 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,7 +20,6 @@ jobs:
 
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.2"
           bundler-cache: true
 
       - run: bundle exec rspec
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..095bc30
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+ruby 3.2