diff --git a/.github/workflows/phpcs.yml b/.github/workflows/phpcs.yml
new file mode 100644
index 0000000..e983ce0
--- /dev/null
+++ b/.github/workflows/phpcs.yml
@@ -0,0 +1,38 @@
+name: PHP_CodeSniffer
+
+on:
+  pull_request: ~
+
+jobs:
+  phpcs:
+    runs-on: ubuntu-latest
+    name: PHP_CodeSniffer
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: 8.3
+        coverage: none
+        tools: cs2pr
+      env:
+        fail-fast: true
+
+    - name: Get composer cache directory
+      id: composer-cache
+      run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+    - name: Cache dependencies
+      uses: actions/cache@v3
+      with:
+        path: ${{ steps.composer-cache.outputs.dir }}
+        key: ${{ runner.os }}-composer-${{ hashFiles('tools/phpcs/composer.json') }}
+        restore-keys: ${{ runner.os }}-composer-
+
+    - name: Install dependencies
+      run: composer update --no-progress --prefer-dist
+
+    - name: Run PHP_CodeSniffer
+      run: composer phpcs -- -q --report=checkstyle | cs2pr
diff --git a/composer.json b/composer.json
index 62ce811..590c29b 100644
--- a/composer.json
+++ b/composer.json
@@ -41,15 +41,7 @@
         },
         {
             "type": "vcs",
-            "url": "git@github.com:systopia/drupal-json_forms.git"
-        },
-        {
-            "type": "vcs",
-            "url": "https://github.com/systopia/opis-json-schema-ext"
-        },
-        {
-            "type": "vcs",
-            "url": "https://github.com/systopia/expression-language-ext"
+            "url": "https://github.com/systopia/drupal-json_forms.git"
         },
         {
             "type": "composer",