diff --git a/composer.json b/composer.json
index 62dc6ce..d7577c2 100644
--- a/composer.json
+++ b/composer.json
@@ -44,7 +44,7 @@
         }
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "~2.17.1||^3.64",
+        "friendsofphp/php-cs-fixer": "~2.17.1||3.63.2",
         "phpstan/phpstan": "^0.12",
         "phpunit/phpunit" : "^7.5 || ^8.5 || ^9.6"
     },
diff --git a/lib/ContextStackTrait.php b/lib/ContextStackTrait.php
index 1bae9a8..4e15bd4 100644
--- a/lib/ContextStackTrait.php
+++ b/lib/ContextStackTrait.php
@@ -112,7 +112,7 @@ public function popContext()
             $this->elementMap,
             $this->contextUri,
             $this->namespaceMap,
-            $this->classMap,
+            $this->classMap
         ) = array_pop($this->contextStack);
     }
 }
diff --git a/lib/Writer.php b/lib/Writer.php
index dc3fa49..7698961 100644
--- a/lib/Writer.php
+++ b/lib/Writer.php
@@ -229,7 +229,7 @@ public function writeAttribute($name, $value): bool
 
         list(
             $namespace,
-            $localName,
+            $localName
         ) = Service::parseClarkNotation($name);
 
         if (array_key_exists($namespace, $this->namespaceMap)) {