diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index 0d4ee4f79752..e4ebe8424378 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -148,7 +148,7 @@ private function addSecretsSection(ArrayNodeDefinition $rootNode)
                 ->arrayNode('secrets')
                     ->canBeDisabled()
                     ->children()
-                        ->scalarNode('vault_directory')->defaultValue('%kernel.project_dir%/config/secrets/%kernel.environment%')->cannotBeEmpty()->end()
+                        ->scalarNode('vault_directory')->defaultValue('%kernel.project_dir%/config/secrets/%kernel.runtime_environment%')->cannotBeEmpty()->end()
                         ->scalarNode('local_dotenv_file')->defaultValue('%kernel.project_dir%/.env.%kernel.environment%.local')->end()
                         ->scalarNode('decryption_env_var')->defaultValue('base64:default::SYMFONY_DECRYPTION_SECRET')->end()
                     ->end()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
index 00afdfd00055..6bc6d958b79b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -522,7 +522,7 @@ class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphor
             'error_controller' => 'error_controller',
             'secrets' => [
                 'enabled' => true,
-                'vault_directory' => '%kernel.project_dir%/config/secrets/%kernel.environment%',
+                'vault_directory' => '%kernel.project_dir%/config/secrets/%kernel.runtime_environment%',
                 'local_dotenv_file' => '%kernel.project_dir%/.env.%kernel.environment%.local',
                 'decryption_env_var' => 'base64:default::SYMFONY_DECRYPTION_SECRET',
             ],
diff --git a/src/Symfony/Component/HttpKernel/CHANGELOG.md b/src/Symfony/Component/HttpKernel/CHANGELOG.md
index a655e2d6f945..364b8a67fc05 100644
--- a/src/Symfony/Component/HttpKernel/CHANGELOG.md
+++ b/src/Symfony/Component/HttpKernel/CHANGELOG.md
@@ -12,6 +12,7 @@ CHANGELOG
    in the request profiler raw content section
  * Allowed adding attributes on controller arguments that will be passed to argument resolvers.
  * kernels implementing the `ExtensionInterface` will now be auto-registered to the container
+ * added parameter `kernel.runtime_environment`, defined as `%env(default:kernel.environment:APP_RUNTIME_ENV)%`
 
 5.1.0
 -----
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index ad9a4b2d78a5..c5a6be534442 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -606,6 +606,7 @@ protected function getKernelParameters()
         return [
             'kernel.project_dir' => realpath($this->getProjectDir()) ?: $this->getProjectDir(),
             'kernel.environment' => $this->environment,
+            'kernel.runtime_environment' => '%env(default:kernel.environment:APP_RUNTIME_ENV)%',
             'kernel.debug' => $this->debug,
             'kernel.build_dir' => realpath($buildDir = $this->warmupDir ?: $this->getBuildDir()) ?: $buildDir,
             'kernel.cache_dir' => realpath($this->getCacheDir()) ?: $this->getCacheDir(),
diff --git a/src/Symfony/Component/HttpKernel/composer.json b/src/Symfony/Component/HttpKernel/composer.json
index 08dc362f9f6c..1677de4bf5b2 100644
--- a/src/Symfony/Component/HttpKernel/composer.json
+++ b/src/Symfony/Component/HttpKernel/composer.json
@@ -32,7 +32,7 @@
         "symfony/config": "^5.0",
         "symfony/console": "^4.4|^5.0",
         "symfony/css-selector": "^4.4|^5.0",
-        "symfony/dependency-injection": "^4.4|^5.0",
+        "symfony/dependency-injection": "^5.1.8",
         "symfony/dom-crawler": "^4.4|^5.0",
         "symfony/expression-language": "^4.4|^5.0",
         "symfony/finder": "^4.4|^5.0",
@@ -53,7 +53,7 @@
         "symfony/config": "<5.0",
         "symfony/console": "<4.4",
         "symfony/form": "<5.0",
-        "symfony/dependency-injection": "<4.4",
+        "symfony/dependency-injection": "<5.1.8",
         "symfony/doctrine-bridge": "<5.0",
         "symfony/http-client": "<5.0",
         "symfony/mailer": "<5.0",