diff --git a/.travis.yml b/.travis.yml
index 3b1b68db1815..ccb06db2e443 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,9 @@ matrix:
     - php: 7.3
     - php: 7.3
       env: SETUP=lowest
+    - php: 7.4snapshot
+    - php: 7.4snapshot
+      env: SETUP=lowest
 
 cache:
   directories:
diff --git a/composer.json b/composer.json
index 25afc1b28cd7..1f508603f3d7 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
         "ext-openssl": "*",
         "doctrine/inflector": "^1.1",
         "dragonmantank/cron-expression": "^2.0",
-        "egulias/email-validator": "^2.0",
+        "egulias/email-validator": "^2.1.10",
         "erusev/parsedown": "^1.7",
         "league/flysystem": "^1.0.8",
         "monolog/monolog": "^1.12|^2.0",
@@ -31,14 +31,14 @@
         "psr/simple-cache": "^1.0",
         "ramsey/uuid": "^3.7",
         "swiftmailer/swiftmailer": "^6.0",
-        "symfony/console": "^4.3",
-        "symfony/debug": "^4.3",
-        "symfony/finder": "^4.3",
-        "symfony/http-foundation": "^4.3",
-        "symfony/http-kernel": "^4.3",
-        "symfony/process": "^4.3",
-        "symfony/routing": "^4.3",
-        "symfony/var-dumper": "^4.3",
+        "symfony/console": "^4.3.4",
+        "symfony/debug": "^4.3.4",
+        "symfony/finder": "^4.3.4",
+        "symfony/http-foundation": "^4.3.4",
+        "symfony/http-kernel": "^4.3.4",
+        "symfony/process": "^4.3.4",
+        "symfony/routing": "^4.3.4",
+        "symfony/var-dumper": "^4.3.4",
         "tijsverkoyen/css-to-inline-styles": "^2.2.1",
         "vlucas/phpdotenv": "^3.3"
     },
@@ -81,11 +81,11 @@
         "filp/whoops": "^2.4",
         "guzzlehttp/guzzle": "^6.3",
         "league/flysystem-cached-adapter": "^1.0",
-        "mockery/mockery": "^1.0",
+        "mockery/mockery": "^1.2.3",
         "moontoast/math": "^1.1",
         "orchestra/testbench-core": "^4.0",
         "pda/pheanstalk": "^4.0",
-        "phpunit/phpunit": "^8.0",
+        "phpunit/phpunit": "^8.3",
         "predis/predis": "^1.1.1",
         "symfony/cache": "^4.3",
         "true/punycode": "^2.1"
diff --git a/src/Illuminate/Console/composer.json b/src/Illuminate/Console/composer.json
index a933528214a6..b837009009b5 100755
--- a/src/Illuminate/Console/composer.json
+++ b/src/Illuminate/Console/composer.json
@@ -17,8 +17,8 @@
         "php": "^7.2",
         "illuminate/contracts": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/console": "^4.3",
-        "symfony/process": "^4.3"
+        "symfony/console": "^4.3.4",
+        "symfony/process": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Cookie/composer.json b/src/Illuminate/Cookie/composer.json
index f01a7c2eda19..107bfe45fa19 100755
--- a/src/Illuminate/Cookie/composer.json
+++ b/src/Illuminate/Cookie/composer.json
@@ -17,8 +17,8 @@
         "php": "^7.2",
         "illuminate/contracts": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/http-foundation": "^4.3",
-        "symfony/http-kernel": "^4.3"
+        "symfony/http-foundation": "^4.3.4",
+        "symfony/http-kernel": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Filesystem/composer.json b/src/Illuminate/Filesystem/composer.json
index a9c76b898a7c..e35159b8f579 100644
--- a/src/Illuminate/Filesystem/composer.json
+++ b/src/Illuminate/Filesystem/composer.json
@@ -17,7 +17,7 @@
         "php": "^7.2",
         "illuminate/contracts": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/finder": "^4.3"
+        "symfony/finder": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Http/Resources/DelegatesToResource.php b/src/Illuminate/Http/Resources/DelegatesToResource.php
index 04fd43729a7d..036a143100e5 100644
--- a/src/Illuminate/Http/Resources/DelegatesToResource.php
+++ b/src/Illuminate/Http/Resources/DelegatesToResource.php
@@ -50,7 +50,7 @@ public function resolveRouteBinding($value)
      */
     public function offsetExists($offset)
     {
-        return array_key_exists($offset, $this->resource);
+        return isset($this->resource[$offset]);
     }
 
     /**
diff --git a/src/Illuminate/Http/composer.json b/src/Illuminate/Http/composer.json
index 3f83d30e6fda..c31372eda1ba 100755
--- a/src/Illuminate/Http/composer.json
+++ b/src/Illuminate/Http/composer.json
@@ -18,8 +18,8 @@
         "ext-json": "*",
         "illuminate/session": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/http-foundation": "^4.3",
-        "symfony/http-kernel": "^4.3"
+        "symfony/http-foundation": "^4.3.4",
+        "symfony/http-kernel": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Queue/composer.json b/src/Illuminate/Queue/composer.json
index cf1de6a8763f..19d614415ec5 100644
--- a/src/Illuminate/Queue/composer.json
+++ b/src/Illuminate/Queue/composer.json
@@ -24,8 +24,8 @@
         "illuminate/pipeline": "^6.0",
         "illuminate/support": "^6.0",
         "opis/closure": "^3.1",
-        "symfony/debug": "^4.3",
-        "symfony/process": "^4.3"
+        "symfony/debug": "^4.3.4",
+        "symfony/process": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Routing/composer.json b/src/Illuminate/Routing/composer.json
index b0b9e1ef6aa9..a363b7c76a85 100644
--- a/src/Illuminate/Routing/composer.json
+++ b/src/Illuminate/Routing/composer.json
@@ -22,10 +22,10 @@
         "illuminate/pipeline": "^6.0",
         "illuminate/session": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/debug": "^4.3",
-        "symfony/http-foundation": "^4.3",
-        "symfony/http-kernel": "^4.3",
-        "symfony/routing": "^4.3"
+        "symfony/debug": "^4.3.4",
+        "symfony/http-foundation": "^4.3.4",
+        "symfony/http-kernel": "^4.3.4",
+        "symfony/routing": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Session/composer.json b/src/Illuminate/Session/composer.json
index cd04dc34287c..9ecc1bef1d97 100755
--- a/src/Illuminate/Session/composer.json
+++ b/src/Illuminate/Session/composer.json
@@ -19,8 +19,8 @@
         "illuminate/contracts": "^6.0",
         "illuminate/filesystem": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/finder": "^4.3",
-        "symfony/http-foundation": "^4.3"
+        "symfony/finder": "^4.3.4",
+        "symfony/http-foundation": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/Support/Facades/Facade.php b/src/Illuminate/Support/Facades/Facade.php
index 97286b9b0fc1..8b0488e01caa 100755
--- a/src/Illuminate/Support/Facades/Facade.php
+++ b/src/Illuminate/Support/Facades/Facade.php
@@ -172,7 +172,9 @@ protected static function resolveFacadeInstance($name)
             return static::$resolvedInstance[$name];
         }
 
-        return static::$resolvedInstance[$name] = static::$app[$name];
+        if (static::$app) {
+            return static::$resolvedInstance[$name] = static::$app[$name];
+        }
     }
 
     /**
diff --git a/src/Illuminate/Support/Traits/Macroable.php b/src/Illuminate/Support/Traits/Macroable.php
index 6ee6dc513f34..0e85dc16591f 100644
--- a/src/Illuminate/Support/Traits/Macroable.php
+++ b/src/Illuminate/Support/Traits/Macroable.php
@@ -80,11 +80,13 @@ public static function __callStatic($method, $parameters)
             ));
         }
 
-        if (static::$macros[$method] instanceof Closure) {
-            return call_user_func_array(Closure::bind(static::$macros[$method], null, static::class), $parameters);
+        $macro = static::$macros[$method];
+
+        if ($macro instanceof Closure) {
+            return call_user_func_array(Closure::bind($macro, null, static::class), $parameters);
         }
 
-        return call_user_func_array(static::$macros[$method], $parameters);
+        return $macro(...$parameters);
     }
 
     /**
@@ -110,6 +112,6 @@ public function __call($method, $parameters)
             return call_user_func_array($macro->bindTo($this, static::class), $parameters);
         }
 
-        return call_user_func_array($macro, $parameters);
+        return $macro(...$parameters);
     }
 }
diff --git a/src/Illuminate/Support/composer.json b/src/Illuminate/Support/composer.json
index 2216c325d238..0e8f15e3ad77 100644
--- a/src/Illuminate/Support/composer.json
+++ b/src/Illuminate/Support/composer.json
@@ -41,8 +41,8 @@
         "illuminate/filesystem": "Required to use the composer class (^6.0).",
         "moontoast/math": "Required to use ordered UUIDs (^1.1).",
         "ramsey/uuid": "Required to use Str::uuid() (^3.7).",
-        "symfony/process": "Required to use the composer class (^4.3).",
-        "symfony/var-dumper": "Required to use the dd function (^4.3).",
+        "symfony/process": "Required to use the composer class (^4.3.4).",
+        "symfony/var-dumper": "Required to use the dd function (^4.3.4).",
         "vlucas/phpdotenv": "Required to use the Env class and env helper (^3.3)."
     },
     "config": {
diff --git a/src/Illuminate/Validation/composer.json b/src/Illuminate/Validation/composer.json
index 67c9acd2ed65..67ff3558e3fa 100755
--- a/src/Illuminate/Validation/composer.json
+++ b/src/Illuminate/Validation/composer.json
@@ -16,12 +16,12 @@
     "require": {
         "php": "^7.2",
         "ext-json": "*",
-        "egulias/email-validator": "^2.0",
+        "egulias/email-validator": "^2.1.10",
         "illuminate/container": "^6.0",
         "illuminate/contracts": "^6.0",
         "illuminate/support": "^6.0",
         "illuminate/translation": "^6.0",
-        "symfony/http-foundation": "^4.3"
+        "symfony/http-foundation": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Illuminate/View/composer.json b/src/Illuminate/View/composer.json
index c9aa48355311..f276acf45d57 100644
--- a/src/Illuminate/View/composer.json
+++ b/src/Illuminate/View/composer.json
@@ -21,7 +21,7 @@
         "illuminate/events": "^6.0",
         "illuminate/filesystem": "^6.0",
         "illuminate/support": "^6.0",
-        "symfony/debug": "^4.3"
+        "symfony/debug": "^4.3.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/Integration/Migration/MigratorTest.php b/tests/Integration/Migration/MigratorTest.php
index a336ca603240..1dd677724cb9 100644
--- a/tests/Integration/Migration/MigratorTest.php
+++ b/tests/Integration/Migration/MigratorTest.php
@@ -27,7 +27,7 @@ public function testDontDisplayOutputWhenOutputObjectIsNotAvailable()
 
         $migrator->run([__DIR__.'/fixtures']);
 
-        $this->assertTrue($this->tableExists('members'));
+        $this->assertTrue($this->tableExists('people'));
     }
 
     private function tableExists($table): bool
diff --git a/tests/Integration/Migration/fixtures/2014_10_12_000000_create_members_table.php b/tests/Integration/Migration/fixtures/2014_10_12_000000_create_people_table.php
similarity index 75%
rename from tests/Integration/Migration/fixtures/2014_10_12_000000_create_members_table.php
rename to tests/Integration/Migration/fixtures/2014_10_12_000000_create_people_table.php
index 422f36d17e69..1f1eeb035960 100644
--- a/tests/Integration/Migration/fixtures/2014_10_12_000000_create_members_table.php
+++ b/tests/Integration/Migration/fixtures/2014_10_12_000000_create_people_table.php
@@ -1,12 +1,10 @@
 <?php
 
-namespace Illuminate\Tests\Integration\Migration\fixtures;
-
 use Illuminate\Support\Facades\Schema;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Database\Migrations\Migration;
 
-class CreateMembersTable extends Migration
+class CreatePeopleTable extends Migration
 {
     /**
      * Run the migrations.
@@ -15,7 +13,7 @@ class CreateMembersTable extends Migration
      */
     public function up()
     {
-        Schema::create('members', function (Blueprint $table) {
+        Schema::create('people', function (Blueprint $table) {
             $table->increments('id');
             $table->string('name');
             $table->string('email')->unique();
@@ -32,6 +30,6 @@ public function up()
      */
     public function down()
     {
-        Schema::drop('members');
+        Schema::drop('people');
     }
 }