diff --git a/composer.json b/composer.json
index 70cbe8b00..9f3199744 100644
--- a/composer.json
+++ b/composer.json
@@ -48,7 +48,7 @@
         "composer/composer": "^1.6",
         "composer/xdebug-handler": "^1.1.0",
         "herrera-io/annotations": "~1.0",
-        "humbug/php-scoper": "dev-master#4f40b5a",
+        "humbug/php-scoper": "^0.8",
         "justinrainbow/json-schema": "^5.2",
         "nikic/iter": "^1.6",
         "ocramius/package-versions": "^1.3",
diff --git a/composer.lock b/composer.lock
index dc6704d28..ac18310b9 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "8ed956d436e7d0c7fdf852a469d8bd72",
+    "content-hash": "b39195aa414ba81ddb1d9c925068aa7d",
     "packages": [
         {
             "name": "amphp/amp",
@@ -947,16 +947,16 @@
         },
         {
             "name": "humbug/php-scoper",
-            "version": "dev-master",
+            "version": "0.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/humbug/php-scoper.git",
-                "reference": "4f40b5a"
+                "reference": "21bd501440454614dd0436b18e1049e0a581d205"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/humbug/php-scoper/zipball/4f40b5a",
-                "reference": "4f40b5a",
+                "url": "https://api.github.com/repos/humbug/php-scoper/zipball/21bd501440454614dd0436b18e1049e0a581d205",
+                "reference": "21bd501440454614dd0436b18e1049e0a581d205",
                 "shasum": ""
             },
             "require": {
@@ -1015,7 +1015,7 @@
                 }
             ],
             "description": "Prefixes all PHP namespaces in a file or directory.",
-            "time": "2018-06-08T12:39:43+00:00"
+            "time": "2018-06-09T14:56:03+00:00"
         },
         {
             "name": "justinrainbow/json-schema",
@@ -4321,7 +4321,6 @@
     "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
-        "humbug/php-scoper": 20,
         "infection/infection": 20
     },
     "prefer-stable": false,
diff --git a/src/PhpScoper/NullScoper.php b/src/PhpScoper/NullScoper.php
index ddf0bc879..f98cb08b9 100644
--- a/src/PhpScoper/NullScoper.php
+++ b/src/PhpScoper/NullScoper.php
@@ -31,7 +31,7 @@ public function scope(string $filePath, string $contents): string
      */
     public function getWhitelist(): Whitelist
     {
-        return Whitelist::create();
+        return Whitelist::create(true);
     }
 
     public function getPrefix(): string
diff --git a/tests/Composer/ComposerOrchestratorTest.php b/tests/Composer/ComposerOrchestratorTest.php
index 2d1354f38..5e1b069e8 100644
--- a/tests/Composer/ComposerOrchestratorTest.php
+++ b/tests/Composer/ComposerOrchestratorTest.php
@@ -118,7 +118,7 @@ public function test_it_can_dump_the_autoloader_with_a_composer_json_with_a_depe
     {
         mirror(self::FIXTURES.'/dir000', $this->tmp);
 
-        ComposerOrchestrator::dumpAutoload(Whitelist::create(), '');
+        ComposerOrchestrator::dumpAutoload(Whitelist::create(true), '');
 
         $expectedPaths = [
             'composer.json',
@@ -346,7 +346,7 @@ public function provideComposerAutoload()
         $composerAutoloaderName = self::COMPOSER_AUTOLOADER_NAME;
 
         yield [
-            Whitelist::create(),
+            Whitelist::create(true),
             '',
             <<<PHP
 <?php
@@ -361,7 +361,7 @@ public function provideComposerAutoload()
         ];
 
         yield [
-            Whitelist::create('Acme\Foo'),  // Whitelist is ignored when prefix is empty
+            Whitelist::create(true, 'Acme\Foo'),  // Whitelist is ignored when prefix is empty
             '',
             <<<PHP
 <?php
@@ -376,7 +376,7 @@ public function provideComposerAutoload()
         ];
 
         yield [
-            Whitelist::create(),
+            Whitelist::create(true),
             '_Box',
             <<<PHP
 <?php
@@ -391,7 +391,7 @@ public function provideComposerAutoload()
         ];
 
         yield [
-            Whitelist::create('Acme\Foo'),
+            Whitelist::create(true, 'Acme\Foo'),
             '_Box',
             <<<PHP
 <?php
diff --git a/tests/PhpScoper/NullScoperTest.php b/tests/PhpScoper/NullScoperTest.php
index dbab3df6b..c39511313 100644
--- a/tests/PhpScoper/NullScoperTest.php
+++ b/tests/PhpScoper/NullScoperTest.php
@@ -44,6 +44,6 @@ public function test_it_exposes_some_elements_of_the_scoping_config(): void
         $scoper = new NullScoper();
 
         $this->assertSame('', $scoper->getPrefix());
-        $this->assertEquals(Whitelist::create(), $scoper->getWhitelist());
+        $this->assertEquals(Whitelist::create(true), $scoper->getWhitelist());
     }
 }
diff --git a/tests/PhpScoper/SimpleScoperTest.php b/tests/PhpScoper/SimpleScoperTest.php
index 54289c102..b4c618e6d 100644
--- a/tests/PhpScoper/SimpleScoperTest.php
+++ b/tests/PhpScoper/SimpleScoperTest.php
@@ -37,7 +37,7 @@ public function test_it_scopes_the_file_content(): void
 JSON;
 
         $prefix = 'HumbugBox';
-        $whitelist = Whitelist::create('Whitelisted\Foo');
+        $whitelist = Whitelist::create(true, 'Whitelisted\Foo');
         $patchers = [];
 
         /** @var ObjectProphecy|PhpScoper $phpScoperProphecy */
@@ -63,7 +63,7 @@ public function test_it_scopes_the_file_content(): void
     public function test_it_exposes_some_elements_of_the_scoping_config(): void
     {
         $prefix = 'HumbugBox';
-        $whitelist = Whitelist::create('Whitelisted\Foo');
+        $whitelist = Whitelist::create(true, 'Whitelisted\Foo');
         $patchers = [];
 
         $scoper = new SimpleScoper(new FakePhpScoper(), $prefix, $whitelist, $patchers);