diff --git a/.github/workflows/jekyll-docker.yml b/.github/workflows/jekyll-docker.yml
index 6ab0d9a..f3eac7f 100644
--- a/.github/workflows/jekyll-docker.yml
+++ b/.github/workflows/jekyll-docker.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@8575951200e472d5f2d95c625da0c7bec8217c42 # v1.161.0
         with:
-          # ruby-version: '3.1' # Not needed with a .ruby-version file
+          # ruby-version: '3.1.0' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
           cache-version: 0 # Increment this number if you need to re-download cached gems
       - name: Build with Jekyll
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..fd2a018
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.1.0