diff --git a/.gitea/workflows/demo.yaml b/.gitea/workflows/demo.yaml
index f2c09b9..a8e8589 100644
--- a/.gitea/workflows/demo.yaml
+++ b/.gitea/workflows/demo.yaml
@@ -4,7 +4,17 @@ run-name: ${{ gitea.actor }} is testing out Gitea Actions 🚀
 on: [push]
 
 jobs:
+  lint:
+    runs-on: ubuntu-latest
+    permissions:
+      checks: write
+      contents: write
+    steps:
+      - name: Standard Ruby
+        uses: standardrb/standard-ruby-action@v1
+
   test:
+    needs: link
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
diff --git a/Gemfile b/Gemfile
index 467acf6..ba47789 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,4 +19,5 @@ group :development do
   gem "rbs"
   gem "rack-test"
   gem "test-unit"
+  gem "standard"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 477fa6c..56dc5f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,6 +9,7 @@ GEM
       base64
     ksuid (1.0.0)
     language_server-protocol (3.17.0.3)
+    lint_roller (1.1.0)
     logger (1.6.0)
     multi_json (1.15.0)
     mustermann (3.0.0)
@@ -54,6 +55,9 @@ GEM
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.31.3)
       parser (>= 3.3.1.0)
+    rubocop-performance (1.21.1)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
     ruby-lsp (0.17.3)
       language_server-protocol (~> 3.17.0)
       prism (>= 0.29.0, < 0.31)
@@ -74,6 +78,18 @@ GEM
       sinatra (= 4.0.0)
       tilt (~> 2.0)
     sorbet-runtime (0.5.11435)
+    standard (1.39.1)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.64.0)
+      standard-custom (~> 1.0.0)
+      standard-performance (~> 1.4)
+    standard-custom (1.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.50)
+    standard-performance (1.4.0)
+      lint_roller (~> 1.1)
+      rubocop-performance (~> 1.21.0)
     strscan (3.1.0)
     test-unit (3.6.2)
       power_assert
@@ -102,6 +118,7 @@ DEPENDENCIES
   ruby-lsp
   sinatra
   sinatra-contrib
+  standard
   test-unit
   ulid
   uuid7