diff --git a/composer.json b/composer.json
index 0d1f4dbc..a7b2aaf8 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "psr/log": "^1.0.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.5",
+        "phpunit/phpunit": "^7.3",
         "graylog2/gelf-php": "^1.4.2",
         "sentry/sentry": "^1.9",
         "ruflin/elastica": ">=0.90 <3.0",
diff --git a/tests/Monolog/Handler/RavenHandlerTest.php b/tests/Monolog/Handler/RavenHandlerTest.php
index c80a5763..5ebfbcff 100644
--- a/tests/Monolog/Handler/RavenHandlerTest.php
+++ b/tests/Monolog/Handler/RavenHandlerTest.php
@@ -273,20 +273,28 @@ class RavenHandlerTest extends TestCase
         $handler = $this->getHandler($ravenClient);
 
         $handler->addBreadcrumb($crumb1 = [
-            'level' => 'info',
             'category' => 'test',
+            'level' => 'info',
             'message' => 'Step 1: user auth',
         ]);
 
         $handler->addBreadcrumb($crumb2 = [
-            'level' => 'info',
             'category' => 'test',
+            'level' => 'info',
             'message' => 'Step 2: prepare user redirect',
         ]);
 
         $handler->handle($this->getRecord(Logger::ERROR, 'ERROR 💥'));
-        $this->assertArraySubset([$crumb1, $crumb2], $ravenClient->breadcrumbs->fetch());
+        $breadcrumbs = $ravenClient->breadcrumbs->fetch();
+        $this->assertCount(2, $breadcrumbs);
+        $this->assertSame('test', $breadcrumbs[0]['category']);
+        $this->assertSame('info', $breadcrumbs[0]['level']);
+        $this->assertSame('Step 1: user auth', $breadcrumbs[0]['message']);
 
+        $this->assertSame('test', $breadcrumbs[1]['category']);
+        $this->assertSame('info', $breadcrumbs[1]['level']);
+        $this->assertSame('Step 2: prepare user redirect', $breadcrumbs[1]['message']);
+        
         $handler->resetBreadcrumbs();
         $handler->handle($this->getRecord(Logger::INFO, 'Hello!'));
         $this->assertEmpty($ravenClient->breadcrumbs->fetch());
diff --git a/tests/Monolog/Processor/IntrospectionProcessorTest.php b/tests/Monolog/Processor/IntrospectionProcessorTest.php
index 5f5d9aea..5dabbc51 100644
--- a/tests/Monolog/Processor/IntrospectionProcessorTest.php
+++ b/tests/Monolog/Processor/IntrospectionProcessorTest.php
@@ -90,8 +90,8 @@ class IntrospectionProcessorTest extends TestCase
         $expected['extra'] = [
             'file' => null,
             'line' => null,
-            'class' => 'ReflectionMethod',
-            'function' => 'invokeArgs',
+            'class' => 'PHPUnit\Framework\TestCase',
+            'function' => 'runTest',
         ];
 
         $processor = new IntrospectionProcessor(Logger::CRITICAL);
@@ -111,8 +111,8 @@ class IntrospectionProcessorTest extends TestCase
         $expected['extra'] = [
             'file' => null,
             'line' => null,
-            'class' => 'ReflectionMethod',
-            'function' => 'invokeArgs',
+            'class' => 'PHPUnit\Framework\TestCase',
+            'function' => 'runTest',
         ];
 
         $processor = new IntrospectionProcessor(Logger::CRITICAL);