diff --git a/core/core.services.yml b/core/core.services.yml
index 1f6880b..5a1d8e6 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -565,6 +565,7 @@ services:
   http_kernel.basic:
     class: Symfony\Component\HttpKernel\HttpKernel
     arguments: ['@event_dispatcher', '@controller_resolver', '@request_stack']
+    lazy: true
   http_negotiation.format_negotiator:
     class: Drupal\Core\ContentNegotiation
     private: true
@@ -586,13 +587,15 @@ services:
     class: Drupal\Core\StackMiddleware\KernelPreHandle
     arguments: ['@kernel']
     tags:
-      - { name: http_middleware, priority: 100 }
+      - { name: http_middleware, priority: -100 }
+    lazy: true
   http_middleware.session:
     class: Drupal\Core\StackMiddleware\Session
     tags:
-      - { name: http_middleware, priority: 50 }
+      - { name: http_middleware, priority: -200 }
     calls:
       - [setContainer, ['@service_container']]
+    lazy: true
   language_manager:
     class: Drupal\Core\Language\LanguageManager
     arguments: ['@language.default']
diff --git a/core/modules/page_cache/page_cache.services.yml b/core/modules/page_cache/page_cache.services.yml
index bbddfa7..a744b4b 100644
--- a/core/modules/page_cache/page_cache.services.yml
+++ b/core/modules/page_cache/page_cache.services.yml
@@ -3,4 +3,4 @@ services:
     class: Drupal\page_cache\StackMiddleware\PageCache
     arguments: ['@cache.render', '@page_cache_request_policy', '@page_cache_response_policy']
     tags:
-      - { name: http_middleware, priority: 200 }
+      - { name: http_middleware, priority: 0 }
diff --git a/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php b/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php
index 6018122..56ad6fc 100644
--- a/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php
+++ b/core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php
@@ -7,8 +7,9 @@
 
 namespace Drupal\system\Tests\HttpKernel;
 
-use Drupal\simpletest\KernelTestBase;
+use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Core\Url;
+use Drupal\simpletest\KernelTestBase;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 
@@ -49,4 +50,17 @@ public function testRequest() {
     $this->assertEqual($request->attributes->get('_previous_optional_argument'), 'test_argument');
   }
 
+  /**
+   * Tests that late middlewares are marked as lazy.
+   */
+  public function testLateMiddlewareShouldBeLazy() {
+    foreach ($this->container->findTaggedServiceIds('http_middleware') as $id => $attributes) {
+      $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
+      $definition = $this->container->getDefinition($id);
+      if ($priority < 0) {
+        $this->assertTrue($definition->isLazy(), SafeMarkup::format('The lazy flag is set on low priority middleware "@id"', array('@id' => $id)));
+      }
+    }
+  }
+
 }