diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..82fa290
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,20 @@
+---
+name: CI
+on: [push]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+
+      - name: Setup Vim
+        uses: rhysd/action-setup-vim@v1
+
+      - name: test
+        run: rake ci
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..be94e6f
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.2.2
diff --git a/Gemfile b/Gemfile
index 4601a47..0923c37 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,4 @@
-source "https://rubygems.org"
-gem 'vim-flavor'
+source 'https://rubygems.org'
+
 gem 'rake'
+gem 'vim-flavor'
diff --git a/Gemfile.lock b/Gemfile.lock
index d692082..5f2b897 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,8 +4,8 @@ GEM
     parslet (2.0.0)
     pastel (0.8.0)
       tty-color (~> 0.5)
-    rake (13.0.6)
-    thor (1.2.1)
+    rake (13.1.0)
+    thor (1.3.0)
     tty-color (0.6.0)
     vim-flavor (4.0.2)
       parslet (>= 1.8, < 3.0)
@@ -20,4 +20,4 @@ DEPENDENCIES
   vim-flavor
 
 BUNDLED WITH
-   2.4.4
+   2.4.22