diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
new file mode 100644
index 0000000..5764018
--- /dev/null
+++ b/.github/workflows/ruby.yml
@@ -0,0 +1,26 @@
+name: Ruby CI
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby-version: ["2.3"]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby ${{ matrix.ruby-version }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+      - name: Install dependencies
+        run: bundle install
+      - name: Run tests
+        run: bundle exec rspec spec
diff --git a/.gitignore b/.gitignore
index c9f5fbe..00dfeed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,3 @@ log/*.log
 # Documentation
 .yardoc
 doc/
-.github