diff --git a/src/Config/ConfigInitializer.php b/src/Config/ConfigInitializer.php
index 2e3c9d6..470d02b 100644
--- a/src/Config/ConfigInitializer.php
+++ b/src/Config/ConfigInitializer.php
@@ -3,9 +3,9 @@
 namespace Acquia\Drupal\RecommendedSettings\Config;
 
 use Acquia\Drupal\RecommendedSettings\Helpers\EnvironmentDetector;
-use Consolidation\Config\Config;
 use Consolidation\Config\ConfigInterface;
 use Consolidation\Config\Loader\YamlConfigLoader;
+use Drush\Config\DrushConfig;
 use Symfony\Component\Console\Input\InputInterface;
 
 /**
@@ -18,7 +18,7 @@ class ConfigInitializer {
   /**
    * Config.
    */
-  protected Config $config;
+  protected DrushConfig $config;
 
   /**
    * Loader.
@@ -43,7 +43,7 @@ class ConfigInitializer {
   /**
    * ConfigInitializer constructor.
    *
-   * @param \Consolidation\Config\ConfigInterface|\Consolidation\Config\Config $config
+   * @param \Consolidation\Config\ConfigInterface|\Drush\Config\DrushConfig $config
    *   The config object.
    * @param \Symfony\Component\Console\Input\InputInterface|null $input
    *   An input object or null.
@@ -147,7 +147,7 @@ protected function loadSiteConfig(): ConfigInitializer {
    * @param string[] $data
    *   An array of data.
    */
-  public function addConfig(array $data): Config {
+  public function addConfig(array $data): DrushConfig {
     $this->processor->add($data);
     return $this->config;
   }
@@ -170,7 +170,7 @@ protected function determineEnvironment(): string {
   /**
    * Process config.
    */
-  public function processConfig(): Config {
+  public function processConfig(): DrushConfig {
     $this->config->replace($this->processor->export());
     return $this->config;
   }
diff --git a/src/Config/DefaultConfig.php b/src/Config/DefaultConfig.php
index 99e92d5..c7b795a 100644
--- a/src/Config/DefaultConfig.php
+++ b/src/Config/DefaultConfig.php
@@ -2,12 +2,12 @@
 
 namespace Acquia\Drupal\RecommendedSettings\Config;
 
-use Consolidation\Config\Config;
+#use Consolidation\Config\Config;
 
 /**
  * The configuration for settings.
  */
-class DefaultConfig extends Config {
+class DefaultConfig extends DefaultDrushConfig {
 
   /**
    * Config Constructor.
diff --git a/src/Config/DefaultDrushConfig.php b/src/Config/DefaultDrushConfig.php
index 1018b15..7b55ddc 100644
--- a/src/Config/DefaultDrushConfig.php
+++ b/src/Config/DefaultDrushConfig.php
@@ -15,17 +15,19 @@ class DefaultDrushConfig extends DrushConfig {
    * @param \Drush\Config\DrushConfig $config
    *   The drush config object.
    */
-  public function __construct(DrushConfig $config) {
+  public function __construct(?DrushConfig $config = NULL) {
     parent::__construct();
-    $this->set('repo.root', $config->get("runtime.project"));
-    $this->set('docroot', $config->get("options.root"));
-    $this->set('composer.bin', $config->get("drush.vendor-dir") . '/bin');
-    if ($config->get("options.ansi") !== NULL) {
-      $this->set('drush.ansi', $config->get("options.ansi"));
+    if ($config) {
+      $this->set('repo.root', $config->get("runtime.project"));
+      $this->set('docroot', $config->get("options.root"));
+      $this->set('composer.bin', $config->get("drush.vendor-dir") . '/bin');
+      if ($config->get("options.ansi") !== NULL) {
+        $this->set('drush.ansi', $config->get("options.ansi"));
+      }
+      $this->set('drush.bin', $config->get("runtime.drush-script"));
+      $this->setDefault('drush.alias', "self");
+      $this->combine($config->export());
     }
-    $this->set('drush.bin', $config->get("runtime.drush-script"));
-    $this->setDefault('drush.alias', "self");
-    $this->combine($config->export());
   }
 
   /**
@@ -36,4 +38,12 @@ public function combine($data) {
     return $this;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function replace($data) {
+    $this->getContext(self::PROCESS_CONTEXT)->replace($data);
+    return $this;
+  }
+
 }
diff --git a/tests/src/Functional/Config/ConfigInitializerTest.php b/tests/src/Functional/Config/ConfigInitializerTest.php
index 1c1bff5..e34cc25 100644
--- a/tests/src/Functional/Config/ConfigInitializerTest.php
+++ b/tests/src/Functional/Config/ConfigInitializerTest.php
@@ -3,8 +3,8 @@
 namespace Acquia\Drupal\RecommendedSettings\Tests\Functional\Config;
 
 use Acquia\Drupal\RecommendedSettings\Config\ConfigInitializer;
+use Acquia\Drupal\RecommendedSettings\Config\DefaultDrushConfig;
 use Acquia\Drupal\RecommendedSettings\Tests\FunctionalTestBase;
-use Consolidation\Config\Config;
 use Symfony\Component\Console\Input\InputDefinition;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Input\StringInput;
@@ -22,7 +22,7 @@ class ConfigInitializerTest extends FunctionalTestBase {
    * @throws \ReflectionException
    */
   public function testSetSite(): void {
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config_initializer = new ConfigInitializer($config);
 
     $method = $this->getReflectionMethod($config_initializer::class, "setSite");
@@ -46,7 +46,7 @@ public function testSetSite(): void {
    * @throws \ReflectionException
    */
   public function testDetermineSite(): void {
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config_initializer = new ConfigInitializer($config);
     $method = $this->getReflectionMethod($config_initializer::class, "determineSite");
     $result = $method->invoke($config_initializer);
@@ -74,7 +74,7 @@ public function testDetermineSite(): void {
    */
   public function testDetermineEnvironment(): void {
     putenv("CI=");
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config_initializer = new ConfigInitializer($config);
     $method = $this->getReflectionMethod($config_initializer::class, "determineEnvironment");
     $result = $method->invoke($config_initializer);
@@ -85,7 +85,7 @@ public function testDetermineEnvironment(): void {
     $this->assertSame("ci", $result);
     putenv("CI=");
 
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config->set("environment", "dev");
     $config_initializer = new ConfigInitializer($config);
     $method = $this->getReflectionMethod($config_initializer::class, "determineEnvironment");
@@ -98,7 +98,7 @@ public function testDetermineEnvironment(): void {
    */
   public function testInitialize(): void {
     putenv("CI=");
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config_initializer = new ConfigInitializer($config);
     $config_initializer->initialize();
     $this->assertEquals($config_initializer->processConfig()->export(), [
@@ -122,7 +122,7 @@ public function testInitialize(): void {
     ]);
 
     putenv("CI=true");
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config_initializer = new ConfigInitializer($config);
     $config_initializer->initialize();
 
@@ -141,7 +141,7 @@ public function testInitialize(): void {
    */
   public function testLoadAllConfig(): void {
     putenv("CI=");
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config_initializer = new ConfigInitializer($config);
     $config = $config_initializer->initialize()->loadAllConfig()->processConfig();
     $this->assertEquals($config->export(), [
@@ -161,7 +161,7 @@ public function testLoadAllConfig(): void {
       ],
     ]);
 
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $project_root = $this->getProjectRoot();
     $drupal_root = $this->getDrupalRoot();
     $config->set("repo.root", $project_root);
@@ -191,7 +191,7 @@ public function testLoadAllConfig(): void {
       ],
     ]);
 
-    $config = new Config();
+    $config = new DefaultDrushConfig();
     $config->set("repo.root", $project_root);
     $config->set("docroot", $this->getDrupalRoot());
     $config_initializer = new ConfigInitializer($config);