diff --git a/src/Plugin.php b/src/Plugin.php
index 9a3979d..d272f6b 100644
--- a/src/Plugin.php
+++ b/src/Plugin.php
@@ -14,7 +14,7 @@
 use Composer\EventDispatcher\EventSubscriberInterface;
 use Composer\IO\IOInterface;
 use Composer\Plugin\PluginInterface;
-use Composer\Script\PackageEvent;
+use Composer\Installer\PackageEvent;
 use Composer\Script\ScriptEvents;
 use Composer\Util\Filesystem;
 
@@ -55,7 +55,7 @@ public static function getSubscribedEvents()
     /**
      * Pre Package event behaviour for backing up preserved paths.
      *
-     * @param \Composer\Script\PackageEvent $event
+     * @param \Composer\Installer\PackageEvent $event
      */
     public function prePackage(PackageEvent $event)
     {
@@ -66,7 +66,7 @@ public function prePackage(PackageEvent $event)
     /**
      * Pre Package event behaviour for backing up preserved paths.
      *
-     * @param \Composer\Script\PackageEvent $event
+     * @param \Composer\Installer\PackageEvent $event
      */
     public function postPackage(PackageEvent $event)
     {
diff --git a/src/PluginWrapper.php b/src/PluginWrapper.php
index eab7557..4f43deb 100644
--- a/src/PluginWrapper.php
+++ b/src/PluginWrapper.php
@@ -14,7 +14,7 @@
 use Composer\EventDispatcher\EventSubscriberInterface;
 use Composer\IO\IOInterface;
 use Composer\Plugin\PluginInterface;
-use Composer\Script\PackageEvent;
+use Composer\Installer\PackageEvent;
 use Composer\Script\ScriptEvents;
 use Composer\Util\Filesystem;
 
@@ -57,7 +57,7 @@ public function __construct(Composer $composer, IOInterface $io)
     /**
      * Pre Package event behaviour for backing up preserved paths.
      *
-     * @param \Composer\Script\PackageEvent $event
+     * @param \Composer\Installer\PackageEvent $event
      */
     public function prePackage(PackageEvent $event)
     {
@@ -82,7 +82,7 @@ public function prePackage(PackageEvent $event)
     /**
      * Pre Package event behaviour for backing up preserved paths.
      *
-     * @param \Composer\Script\PackageEvent $event
+     * @param \Composer\Installer\PackageEvent $event
      */
     public function postPackage(PackageEvent $event)
     {
@@ -100,7 +100,7 @@ public function postPackage(PackageEvent $event)
      * In the case of update, the target package is retrieved, as that will
      * provide the path the package will be installed to.
      *
-     * @param \Composer\Script\PackageEvent $event
+     * @param \Composer\Installer\PackageEvent $event
      * @return \Composer\Package\PackageInterface[]
      * @throws \Exception
      */
diff --git a/tests/FixturesTest.php b/tests/FixturesTest.php
index 2c45f6a..fe1f69d 100644
--- a/tests/FixturesTest.php
+++ b/tests/FixturesTest.php
@@ -58,7 +58,10 @@ public function testFixtures($folder, $commands = array(), $files = array())
         // the latest code.
         $this->composer('config', 'repositories.dev', 'path', $this->projectRoot);
         
-        $this->composer('install');
+        $output = $this->composer('install');
+
+        // Check for deprecation notices.
+        $this->assertDeprecationNotice($output);
 
         // Run additional composer commands.
         foreach ($commands as $command) {
@@ -123,4 +126,15 @@ protected function composer($command)
 
         return $output;
     }
+
+    /**
+     * Check lines for not having any deprecation notice.
+     * @param string[] $lines
+     */
+    protected function assertDeprecationNotice($lines)
+    {
+        foreach ($lines as $line) {
+            $this->assertNotContains('Deprecation Notice:', $line);
+        }
+    }
 }