diff --git a/composer.json b/composer.json
index 83fdde7d..dc56a753 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,8 @@
   "require": {
     "php": ">=5.5",
     "ext-mbstring": "*",
-    "symfony/property-access": "^2.8 || ^3.4 || ^4.4"
+    "symfony/property-access": "^2.8 || ^3.4 || ^4.4",
+    "psr/container": "^1.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^4.8"
diff --git a/src/Execution/Container/Container.php b/src/Execution/Container/Container.php
index 975f9d1b..42f4561c 100644
--- a/src/Execution/Container/Container.php
+++ b/src/Execution/Container/Container.php
@@ -8,7 +8,9 @@
 
 namespace Youshido\GraphQL\Execution\Container;
 
-class Container implements ContainerInterface
+use \Psr\Container\ContainerInterface as PsrContainerInterface;
+
+class Container implements ContainerInterface, PsrContainerInterface
 {
 
     private $keyset   = [];
@@ -72,4 +74,4 @@ private function assertIdentifierSet($id)
             throw new \RuntimeException(sprintf('Container item "%s" was not set', $id));
         }
     }
-}
\ No newline at end of file
+}