diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
new file mode 100644
index 00000000..ab4d68ba
--- /dev/null
+++ b/.github/workflows/static.yml
@@ -0,0 +1,29 @@
+name: Static analysis
+
+on:
+  pull_request:
+
+jobs:
+  php-cs-fixer:
+    name: PHP-CS-Fixer
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '7.4'
+          coverage: none
+          extensions: mbstring
+
+      - name: Download dependencies
+        run: composer update --no-interaction --no-progress
+
+      - name: Download PHP CS Fixer
+        run: composer require "friendsofphp/php-cs-fixer:2.18.4"
+
+      - name: Execute PHP CS Fixer
+        run: vendor/bin/php-cs-fixer fix --diff-format udiff --dry-run
diff --git a/src/Uri.php b/src/Uri.php
index ab201c1d..0f9f020d 100644
--- a/src/Uri.php
+++ b/src/Uri.php
@@ -109,7 +109,7 @@ static function ($matches) {
             $url
         );
 
-        $result = parse_url($prefix.$encodedUrl);
+        $result = parse_url($prefix . $encodedUrl);
 
         if ($result === false) {
             return false;
diff --git a/src/Utils.php b/src/Utils.php
index 7c7cc3eb..f4e48640 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -217,7 +217,7 @@ public static function modifyRequest(RequestInterface $request, array $changes)
             ->withQueryParams($request->getQueryParams())
             ->withCookieParams($request->getCookieParams())
             ->withUploadedFiles($request->getUploadedFiles());
-        
+
             foreach ($request->getAttributes() as $key => $value) {
                 $new = $new->withAttribute($key, $value);
             }