diff --git a/src/Command/InstallPluginCommand.php b/src/Command/InstallPluginCommand.php
index 0f961c4..d33880a 100644
--- a/src/Command/InstallPluginCommand.php
+++ b/src/Command/InstallPluginCommand.php
@@ -19,8 +19,8 @@
 use Symfony\Component\Finder\Finder;
 use Ymir\Cli\ApiClient;
 use Ymir\Cli\CliConfiguration;
+use Ymir\Cli\Executable\ComposerExecutable;
 use Ymir\Cli\GitHubClient;
-use Ymir\Cli\Process\Process;
 use Ymir\Cli\ProjectConfiguration\ProjectConfiguration;
 use Ymir\Cli\Support\Arr;
 
@@ -33,6 +33,13 @@ class InstallPluginCommand extends AbstractProjectCommand
      */
     public const NAME = 'install-plugin';
 
+    /**
+     * The Composer executable.
+     *
+     * @var ComposerExecutable
+     */
+    private $composerExecutable;
+
     /**
      * The file system.
      *
@@ -57,10 +64,11 @@ class InstallPluginCommand extends AbstractProjectCommand
     /**
      * Constructor.
      */
-    public function __construct(ApiClient $apiClient, CliConfiguration $cliConfiguration, Filesystem $filesystem, GitHubClient $gitHubClient, ProjectConfiguration $projectConfiguration, string $projectDirectory)
+    public function __construct(ApiClient $apiClient, CliConfiguration $cliConfiguration, ComposerExecutable $composerExecutable, Filesystem $filesystem, GitHubClient $gitHubClient, ProjectConfiguration $projectConfiguration, string $projectDirectory)
     {
         parent::__construct($apiClient, $cliConfiguration, $projectConfiguration);
 
+        $this->composerExecutable = $composerExecutable;
         $this->filesystem = $filesystem;
         $this->gitHubClient = $gitHubClient;
         $this->projectDirectory = rtrim($projectDirectory, '/');
@@ -90,7 +98,7 @@ protected function perform()
 
         if ('bedrock' === $projectType) {
             $this->output->info($message.' using Composer');
-            Process::runShellCommandline('composer require ymirapp/wordpress-plugin');
+            $this->composerExecutable->require('ymirapp/wordpress-plugin');
         } elseif ('wordpress' === $projectType) {
             $this->output->info($message.' from GitHub');
             $this->installFromGitHub();
diff --git a/src/Command/Project/InitializeProjectCommand.php b/src/Command/Project/InitializeProjectCommand.php
index e958200..1a56683 100644
--- a/src/Command/Project/InitializeProjectCommand.php
+++ b/src/Command/Project/InitializeProjectCommand.php
@@ -24,9 +24,9 @@
 use Ymir\Cli\Command\Docker\CreateDockerfileCommand;
 use Ymir\Cli\Command\InstallPluginCommand;
 use Ymir\Cli\Command\Provider\ConnectProviderCommand;
+use Ymir\Cli\Executable\ComposerExecutable;
 use Ymir\Cli\Executable\DockerExecutable;
 use Ymir\Cli\Executable\WpCliExecutable;
-use Ymir\Cli\Process\Process;
 use Ymir\Cli\ProjectConfiguration\ProjectConfiguration;
 use Ymir\Cli\Support\Arr;
 
@@ -46,6 +46,13 @@ class InitializeProjectCommand extends AbstractCommand
      */
     public const NAME = 'project:init';
 
+    /**
+     * The Composer executable.
+     *
+     * @var ComposerExecutable
+     */
+    private $composerExecutable;
+
     /**
      * Docker executable.
      *
@@ -77,10 +84,11 @@ class InitializeProjectCommand extends AbstractCommand
     /**
      * Constructor.
      */
-    public function __construct(ApiClient $apiClient, CliConfiguration $cliConfiguration, DockerExecutable $dockerExecutable, Filesystem $filesystem, ProjectConfiguration $projectConfiguration, string $projectDirectory, WpCliExecutable $wpCliExecutable)
+    public function __construct(ApiClient $apiClient, CliConfiguration $cliConfiguration, ComposerExecutable $composerExecutable, DockerExecutable $dockerExecutable, Filesystem $filesystem, ProjectConfiguration $projectConfiguration, string $projectDirectory, WpCliExecutable $wpCliExecutable)
     {
         parent::__construct($apiClient, $cliConfiguration, $projectConfiguration);
 
+        $this->composerExecutable = $composerExecutable;
         $this->dockerExecutable = $dockerExecutable;
         $this->filesystem = $filesystem;
         $this->projectDirectory = rtrim($projectDirectory, '/');
@@ -213,7 +221,7 @@ private function checkForWordPress(string $projectType)
 
         if ('bedrock' === $projectType) {
             $this->output->info('Creating new Bedrock project');
-            Process::runShellCommandline('composer create-project roots/bedrock .');
+            $this->composerExecutable->createProject('roots/bedrock');
         } elseif ('wordpress' === $projectType) {
             $this->output->info('Downloading WordPress using WP-CLI');
             $this->wpCliExecutable->downloadWordPress();
diff --git a/src/Executable/ComposerExecutable.php b/src/Executable/ComposerExecutable.php
new file mode 100644
index 0000000..df1b322
--- /dev/null
+++ b/src/Executable/ComposerExecutable.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of Ymir command-line tool.
+ *
+ * (c) Carl Alexander <support@ymirapp.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Ymir\Cli\Executable;
+
+class ComposerExecutable extends AbstractExecutable
+{
+    /**
+     * Create a new project from the given package into the given directory.
+     */
+    public function createProject(string $package, string $directory = '.')
+    {
+        $this->run(sprintf('create-project %s %s', $package, $directory));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDisplayName(): string
+    {
+        return 'Composer';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getExecutable(): string
+    {
+        return 'composer';
+    }
+
+    /**
+     * Add the given package to the project's "composer.json" file and install it.
+     */
+    public function require(string $package)
+    {
+        $this->run(sprintf('require %s', $package));
+    }
+}