diff --git a/composer.json b/composer.json
index a53a578f8a..86c2dd6fd8 100644
--- a/composer.json
+++ b/composer.json
@@ -120,7 +120,7 @@
             "Symfony\\Bridge\\Twig\\": "src/Symfony/Bridge/Twig/",
             "Symfony\\Bundle\\": "src/Symfony/Bundle/",
             "Symfony\\Component\\": "src/Symfony/Component/",
-            "Symfony\\Contract\\": "src/Symfony/Contract/"
+            "Symfony\\Contracts\\": "src/Symfony/Contracts/"
         },
         "classmap": [
             "src/Symfony/Component/Intl/Resources/stubs"
diff --git a/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php b/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
index acb4fa1225..547a70adab 100644
--- a/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
+++ b/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
@@ -24,7 +24,7 @@ use Symfony\Component\Form\Exception\RuntimeException;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\Options;
 use Symfony\Component\OptionsResolver\OptionsResolver;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 abstract class DoctrineType extends AbstractType implements ResetInterface
 {
diff --git a/src/Symfony/Bridge/Monolog/Logger.php b/src/Symfony/Bridge/Monolog/Logger.php
index f735ff0cf2..ba5caf06ea 100644
--- a/src/Symfony/Bridge/Monolog/Logger.php
+++ b/src/Symfony/Bridge/Monolog/Logger.php
@@ -14,7 +14,7 @@ namespace Symfony\Bridge\Monolog;
 use Monolog\Logger as BaseLogger;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Logger.
diff --git a/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php b/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
index fc44b39234..13f8a2de3e 100644
--- a/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
+++ b/src/Symfony/Bridge/Monolog/Processor/DebugProcessor.php
@@ -15,7 +15,7 @@ use Monolog\Logger;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 class DebugProcessor implements DebugLoggerInterface, ResetInterface
 {
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 17913847b4..a3953a246f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -94,7 +94,7 @@ use Symfony\Component\WebLink\HttpHeaderSerializer;
 use Symfony\Component\Workflow;
 use Symfony\Component\Yaml\Command\LintCommand as BaseYamlLintCommand;
 use Symfony\Component\Yaml\Yaml;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * FrameworkExtension.
diff --git a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
index f573afe1af..8b737d43f7 100644
--- a/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/ChainAdapter.php
@@ -19,7 +19,7 @@ use Symfony\Component\Cache\Exception\InvalidArgumentException;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
 use Symfony\Component\Cache\Traits\GetTrait;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Chains several adapters together.
diff --git a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
index 12ce429429..5ccbdb00ba 100644
--- a/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
+++ b/src/Symfony/Component/Cache/Adapter/TraceableAdapter.php
@@ -16,7 +16,7 @@ use Symfony\Component\Cache\CacheInterface;
 use Symfony\Component\Cache\CacheItem;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * An adapter that collects data about all cache calls.
diff --git a/src/Symfony/Component/Cache/DoctrineProvider.php b/src/Symfony/Component/Cache/DoctrineProvider.php
index 01ce9daf02..3cc186962e 100644
--- a/src/Symfony/Component/Cache/DoctrineProvider.php
+++ b/src/Symfony/Component/Cache/DoctrineProvider.php
@@ -13,7 +13,7 @@ namespace Symfony\Component\Cache;
 
 use Doctrine\Common\Cache\CacheProvider;
 use Psr\Cache\CacheItemPoolInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
diff --git a/src/Symfony/Component/Cache/ResettableInterface.php b/src/Symfony/Component/Cache/ResettableInterface.php
index 79d0b54849..7b0a853f23 100644
--- a/src/Symfony/Component/Cache/ResettableInterface.php
+++ b/src/Symfony/Component/Cache/ResettableInterface.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Cache;
 
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Resets a pool's local state.
diff --git a/src/Symfony/Component/Cache/Simple/ChainCache.php b/src/Symfony/Component/Cache/Simple/ChainCache.php
index 82032cde9e..d3d575a661 100644
--- a/src/Symfony/Component/Cache/Simple/ChainCache.php
+++ b/src/Symfony/Component/Cache/Simple/ChainCache.php
@@ -15,7 +15,7 @@ use Psr\SimpleCache\CacheInterface;
 use Symfony\Component\Cache\Exception\InvalidArgumentException;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Chains several caches together.
diff --git a/src/Symfony/Component/Cache/Simple/TraceableCache.php b/src/Symfony/Component/Cache/Simple/TraceableCache.php
index d119a54961..d6ed40f443 100644
--- a/src/Symfony/Component/Cache/Simple/TraceableCache.php
+++ b/src/Symfony/Component/Cache/Simple/TraceableCache.php
@@ -14,7 +14,7 @@ namespace Symfony\Component\Cache\Simple;
 use Psr\SimpleCache\CacheInterface;
 use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\ResettableInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * An adapter that collects data about all cache calls.
diff --git a/src/Symfony/Component/Cache/Traits/ProxyTrait.php b/src/Symfony/Component/Cache/Traits/ProxyTrait.php
index dea3843189..c86f360ab7 100644
--- a/src/Symfony/Component/Cache/Traits/ProxyTrait.php
+++ b/src/Symfony/Component/Cache/Traits/ProxyTrait.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\Cache\Traits;
 
 use Symfony\Component\Cache\PruneableInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php b/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
index 63715f369b..b0d3383d50 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatterStyleStack.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\Console\Formatter;
 
 use Symfony\Component\Console\Exception\InvalidArgumentException;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * @author Jean-François Simon <contact@jfsimon.fr>
diff --git a/src/Symfony/Component/DependencyInjection/ResettableContainerInterface.php b/src/Symfony/Component/DependencyInjection/ResettableContainerInterface.php
index 6fb1d2ae31..32cf0e9b04 100644
--- a/src/Symfony/Component/DependencyInjection/ResettableContainerInterface.php
+++ b/src/Symfony/Component/DependencyInjection/ResettableContainerInterface.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection;
 
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * ResettableContainerInterface defines additional resetting functionality
diff --git a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcherInterface.php b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcherInterface.php
index 9781bdbb61..cd4d7470af 100644
--- a/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcherInterface.php
+++ b/src/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcherInterface.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\EventDispatcher\Debug;
 
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * @deprecated since Symfony 4.1
diff --git a/src/Symfony/Component/ExpressionLanguage/Compiler.php b/src/Symfony/Component/ExpressionLanguage/Compiler.php
index ca99d4e5ea..c048958518 100644
--- a/src/Symfony/Component/ExpressionLanguage/Compiler.php
+++ b/src/Symfony/Component/ExpressionLanguage/Compiler.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ExpressionLanguage;
 
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Compiles a node to PHP code.
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollectorInterface.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollectorInterface.php
index 96d3b8f49a..b9584110ec 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollectorInterface.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollectorInterface.php
@@ -13,7 +13,7 @@ namespace Symfony\Component\HttpKernel\DataCollector;
 
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * DataCollectorInterface.
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
index 12f5084f0c..3a7e51bf8d 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
@@ -16,7 +16,7 @@ use Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcherInterface;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * EventDataCollector.
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/ServicesResetter.php b/src/Symfony/Component/HttpKernel/DependencyInjection/ServicesResetter.php
index 9af5e7934d..734fadbd74 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/ServicesResetter.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/ServicesResetter.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpKernel\DependencyInjection;
 
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Resets provided services.
diff --git a/src/Symfony/Component/HttpKernel/Profiler/Profiler.php b/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
index 6ecfd2a4be..0216133b78 100644
--- a/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
+++ b/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
@@ -16,7 +16,7 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\DataCollector\DataCollectorInterface;
 use Symfony\Component\HttpKernel\DataCollector\LateDataCollectorInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 use Psr\Log\LoggerInterface;
 
 /**
diff --git a/src/Symfony/Component/Security/Core/Authentication/Token/Storage/TokenStorage.php b/src/Symfony/Component/Security/Core/Authentication/Token/Storage/TokenStorage.php
index 703badc2b0..f1f5391ba7 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Token/Storage/TokenStorage.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Token/Storage/TokenStorage.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\Security\Core\Authentication\Token\Storage;
 
 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * TokenStorage contains a TokenInterface.
diff --git a/src/Symfony/Component/Stopwatch/Stopwatch.php b/src/Symfony/Component/Stopwatch/Stopwatch.php
index 2b66d88da9..c203258e01 100644
--- a/src/Symfony/Component/Stopwatch/Stopwatch.php
+++ b/src/Symfony/Component/Stopwatch/Stopwatch.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Stopwatch;
 
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Stopwatch provides a way to profile code.
diff --git a/src/Symfony/Component/Validator/Validator/TraceableValidator.php b/src/Symfony/Component/Validator/Validator/TraceableValidator.php
index a5e50ca4ac..e554b89faf 100644
--- a/src/Symfony/Component/Validator/Validator/TraceableValidator.php
+++ b/src/Symfony/Component/Validator/Validator/TraceableValidator.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\Validator\Validator;
 
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
-use Symfony\Contract\Service\ResetInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Collects some data about validator calls.
diff --git a/src/Symfony/Contract/.gitignore b/src/Symfony/Contracts/.gitignore
similarity index 100%
rename from src/Symfony/Contract/.gitignore
rename to src/Symfony/Contracts/.gitignore
diff --git a/src/Symfony/Contract/CHANGELOG.md b/src/Symfony/Contracts/CHANGELOG.md
similarity index 100%
rename from src/Symfony/Contract/CHANGELOG.md
rename to src/Symfony/Contracts/CHANGELOG.md
diff --git a/src/Symfony/Contract/LICENSE b/src/Symfony/Contracts/LICENSE
similarity index 100%
rename from src/Symfony/Contract/LICENSE
rename to src/Symfony/Contracts/LICENSE
diff --git a/src/Symfony/Contract/README.md b/src/Symfony/Contracts/README.md
similarity index 100%
rename from src/Symfony/Contract/README.md
rename to src/Symfony/Contracts/README.md
diff --git a/src/Symfony/Contract/Service/ResetInterface.php b/src/Symfony/Contracts/Service/ResetInterface.php
similarity index 96%
rename from src/Symfony/Contract/Service/ResetInterface.php
rename to src/Symfony/Contracts/Service/ResetInterface.php
index a99669c911..1af1075eee 100644
--- a/src/Symfony/Contract/Service/ResetInterface.php
+++ b/src/Symfony/Contracts/Service/ResetInterface.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Contract\Service;
+namespace Symfony\Contracts\Service;
 
 /**
  * Provides a way to reset an object to its initial state.
diff --git a/src/Symfony/Contract/composer.json b/src/Symfony/Contracts/composer.json
similarity index 94%
rename from src/Symfony/Contract/composer.json
rename to src/Symfony/Contracts/composer.json
index 2b515ef81c..9deed9d470 100644
--- a/src/Symfony/Contract/composer.json
+++ b/src/Symfony/Contracts/composer.json
@@ -19,7 +19,7 @@
         "php": "^7.1.3"
     },
     "autoload": {
-        "psr-4": { "Symfony\\Contract\\": "" },
+        "psr-4": { "Symfony\\Contracts\\": "" },
         "exclude-from-classmap": [
             "**/Tests/"
         ]
diff --git a/src/Symfony/Contract/phpunit.xml.dist b/src/Symfony/Contracts/phpunit.xml.dist
similarity index 100%
rename from src/Symfony/Contract/phpunit.xml.dist
rename to src/Symfony/Contracts/phpunit.xml.dist