diff --git a/.travis.yml b/.travis.yml
index 19d9f9d2e..52433a15f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,6 @@ cache:
 env:
   global:
     - PATH="$HOME/.composer/vendor/bin:$PATH"
-    - SYMFONY_DEPRECATIONS_HELPER=weak
 
 matrix:
   fast_finish: true
@@ -31,16 +30,16 @@ matrix:
       env: SYMFONY_VERSION=2.3.*
     - php: 5.6
       env: SYMFONY_VERSION=2.7.*
-    - php: 5.6
-      env: SYMFONY_VERSION=2.8.*
     - php: 5.5
-      env: SYMFONY_VERSION="3.0.*" ACL_VERSION="dev-master"
+      env: SYMFONY_VERSION=3.0.* ACL_VERSION="dev-master"
     - php: 5.6
-      env: SYMFONY_VERSION="3.0.*" ACL_VERSION="dev-master"
+      env: SYMFONY_VERSION=3.0.* ACL_VERSION="dev-master"
     - php: 7.0
-      env: SYMFONY_VERSION="3.0.*" ACL_VERSION="dev-master"
+      env: SYMFONY_VERSION=3.0.* ACL_VERSION="dev-master"
 
   allow_failures:
+    - php: 7.0
+      env: SYMFONY_VERSION=3.0.* ACL_VERSION="dev-master"
     - php: hhvm
 
 before_script:
diff --git a/CDN/CloudFront.php b/CDN/CloudFront.php
index 9186a5d91..748eed462 100644
--- a/CDN/CloudFront.php
+++ b/CDN/CloudFront.php
@@ -171,7 +171,7 @@ private function getClient()
     public function setClient($client)
     {
         if (!$client instanceof CloudFrontClient) {
-            trigger_error('The '.__METHOD__.' expects a CloudFrontClient as parameter.', E_USER_DEPRECATED);
+            @trigger_error('The '.__METHOD__.' expects a CloudFrontClient as parameter.', E_USER_DEPRECATED);
         }
 
         $this->client = $client;
diff --git a/DependencyInjection/Compiler/SecurityContextCompilerPass.php b/DependencyInjection/Compiler/SecurityContextCompilerPass.php
new file mode 100644
index 000000000..bfd43112b
--- /dev/null
+++ b/DependencyInjection/Compiler/SecurityContextCompilerPass.php
@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * This file is part of the Sonata Project package.
+ *
+ * (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Sonata\MediaBundle\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * SecurityContextCompilerPass.
+ *
+ * This compiler pass provides compatibility with Syfmony < 2.6 security.context service
+ * and 2.6+ security.authorization_checker service. This pass may be removed when support
+ * for Symfony < 2.6 is dropped.
+ */
+class SecurityContextCompilerPass implements CompilerPassInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function process(ContainerBuilder $container)
+    {
+        // Prefer the security.authorization_checker service
+        if ($container->hasDefinition('security.authorization_checker')) {
+            $security = $container->getDefinition('security.authorization_checker');
+        } else {
+            $security = $container->getDefinition('security.context');
+        }
+
+        $container->getDefinition('sonata.media.security.superadmin_strategy')
+            ->replaceArgument(1, $security);
+
+        $container->getDefinition('sonata.media.security.connected_strategy')
+            ->replaceArgument(1, $security);
+    }
+}
diff --git a/Model/Media.php b/Model/Media.php
index 4daa3e237..16e526435 100644
--- a/Model/Media.php
+++ b/Model/Media.php
@@ -13,7 +13,8 @@
 
 use Imagine\Image\Box;
 use Sonata\ClassificationBundle\Model\CategoryInterface;
-use Symfony\Component\Validator\ExecutionContextInterface;
+use Symfony\Component\Validator\Context\ExecutionContextInterface;
+use Symfony\Component\Validator\ExecutionContextInterface as LegacyExecutionContextInterface;
 
 abstract class Media implements MediaInterface
 {
@@ -611,12 +612,23 @@ public function getPreviousProviderReference()
     }
 
     /**
-     * @param ExecutionContextInterface $context
+     * @param ExecutionContextInterface|LegacyExecutionContextInterface $context
      */
-    public function isStatusErroneous(ExecutionContextInterface $context)
+    public function isStatusErroneous($context)
     {
         if ($this->getBinaryContent() && $this->getProviderStatus() == self::STATUS_ERROR) {
-            $context->addViolationAt('binaryContent', 'invalid', array(), null);
+            // Interface compatibility, the new ExecutionContextInterface should be typehinted when support for Symfony <2.5 is dropped
+            if (!$context instanceof ExecutionContextInterface && !$context instanceof LegacyExecutionContextInterface) {
+                throw new \InvalidArgumentException('Argument 1 should be an instance of Symfony\Component\Validator\ExecutionContextInterface or Symfony\Component\Validator\Context\ExecutionContextInterface');
+            }
+
+            if ($context instanceof LegacyExecutionContextInterface) {
+                $context->addViolationAt('binaryContent', 'invalid', array(), null);
+            } else {
+                $context->buildViolation('invalid')
+                   ->atPath('binaryContent')
+                   ->addViolation();
+            }
         }
     }
 
diff --git a/Resources/config/security.xml b/Resources/config/security.xml
index f7d9d7933..f0b443599 100644
--- a/Resources/config/security.xml
+++ b/Resources/config/security.xml
@@ -15,7 +15,7 @@
 
         <service id="sonata.media.security.superadmin_strategy" class="Sonata\MediaBundle\Security\RolesDownloadStrategy" >
             <argument type="service" id="translator" />
-            <argument type="service" id="security.context" />
+            <argument /> <!-- Either security.context or security.authorization_checker -->
             <argument type="collection">
                 <argument>ROLE_SUPER_ADMIN</argument>
                 <argument>ROLE_ADMIN</argument>
@@ -24,7 +24,7 @@
 
         <service id="sonata.media.security.connected_strategy" class="Sonata\MediaBundle\Security\RolesDownloadStrategy" >
             <argument type="service" id="translator" />
-            <argument type="service" id="security.context" />
+            <argument /> <!-- Either security.context or security.authorization_checker -->
             <argument type="collection">
                 <argument>IS_AUTHENTICATED_FULLY</argument>
                 <argument>IS_AUTHENTICATED_REMEMBERED</argument>
diff --git a/Security/RolesDownloadStrategy.php b/Security/RolesDownloadStrategy.php
index 57c4c1932..c002f5477 100644
--- a/Security/RolesDownloadStrategy.php
+++ b/Security/RolesDownloadStrategy.php
@@ -13,6 +13,8 @@
 
 use Sonata\MediaBundle\Model\MediaInterface;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
+use Symfony\Component\Security\Core\Exception\AuthenticationCredentialsNotFoundException;
 use Symfony\Component\Security\Core\SecurityContextInterface;
 use Symfony\Component\Translation\TranslatorInterface;
 
@@ -24,7 +26,7 @@ class RolesDownloadStrategy implements DownloadStrategyInterface
     protected $roles;
 
     /**
-     * @var SecurityContextInterface
+     * @var AuthorizationCheckerInterface|SecurityContextInterface
      */
     protected $security;
 
@@ -34,12 +36,16 @@ class RolesDownloadStrategy implements DownloadStrategyInterface
     protected $translator;
 
     /**
-     * @param TranslatorInterface      $translator
-     * @param SecurityContextInterface $security
-     * @param string[]                 $roles
+     * @param TranslatorInterface                                    $translator
+     * @param AuthorizationCheckerInterface|SecurityContextInterface $security
+     * @param string[]                                               $roles
      */
-    public function __construct(TranslatorInterface $translator, SecurityContextInterface $security, array $roles = array())
+    public function __construct(TranslatorInterface $translator, $security, array $roles = array())
     {
+        if (!$security instanceof AuthorizationCheckerInterface && !$security instanceof SecurityContextInterface) {
+            throw new \InvalidArgumentException('Argument 2 should be an instance of Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface or Symfony\Component\Security\Core\SecurityContextInterface');
+        }
+
         $this->roles      = $roles;
         $this->security   = $security;
         $this->translator = $translator;
@@ -50,7 +56,12 @@ public function __construct(TranslatorInterface $translator, SecurityContextInte
      */
     public function isGranted(MediaInterface $media, Request $request)
     {
-        return $this->security->getToken() && $this->security->isGranted($this->roles);
+        try {
+            return $this->security->isGranted($this->roles);
+        } catch (AuthenticationCredentialsNotFoundException $e) {
+            // The token is not set in an AuthorizationCheckerInterface object
+            return false;
+        }
     }
 
     /**
diff --git a/SonataMediaBundle.php b/SonataMediaBundle.php
index 26dfaa3d1..6636236e0 100644
--- a/SonataMediaBundle.php
+++ b/SonataMediaBundle.php
@@ -14,6 +14,7 @@
 use Sonata\CoreBundle\Form\FormHelper;
 use Sonata\MediaBundle\DependencyInjection\Compiler\AddProviderCompilerPass;
 use Sonata\MediaBundle\DependencyInjection\Compiler\GlobalVariablesCompilerPass;
+use Sonata\MediaBundle\DependencyInjection\Compiler\SecurityContextCompilerPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
 
@@ -26,6 +27,7 @@ public function build(ContainerBuilder $container)
     {
         $container->addCompilerPass(new AddProviderCompilerPass());
         $container->addCompilerPass(new GlobalVariablesCompilerPass());
+        $container->addCompilerPass(new SecurityContextCompilerPass());
 
         $this->registerFormMapping();
     }
diff --git a/Tests/CDN/CloudFrontTest.php b/Tests/CDN/CloudFrontTest.php
index 1e5ef9ddd..79854ade9 100644
--- a/Tests/CDN/CloudFrontTest.php
+++ b/Tests/CDN/CloudFrontTest.php
@@ -16,7 +16,10 @@
  */
 class CloudFrontTest extends \PHPUnit_Framework_TestCase
 {
-    public function testCloudFront()
+    /**
+     * @group legacy
+     */
+    public function testLegacyCloudFront()
     {
         $client = $this->getMock('CloudFrontClientSpy', array('createInvalidation'), array(), '', false);
         $client->expects($this->exactly(3))->method('createInvalidation')->will($this->returnValue(new CloudFrontResultSpy()));
@@ -36,7 +39,10 @@ public function testCloudFront()
         $cloudFront->flushPaths(array($path));
     }
 
-    public function testException()
+    /**
+     * @group legacy
+     */
+    public function testLegacyException()
     {
         $this->setExpectedException('\RuntimeException', 'Unable to flush : ');
         $client = $this->getMock('CloudFrontClientSpy', array('createInvalidation'), array(), '', false);
diff --git a/Tests/Security/RolesDownloadStrategyTest.php b/Tests/Security/RolesDownloadStrategyTest.php
index 127def1bf..5b391b89d 100644
--- a/Tests/Security/RolesDownloadStrategyTest.php
+++ b/Tests/Security/RolesDownloadStrategyTest.php
@@ -15,24 +15,24 @@
 
 class RolesDownloadStrategyTest extends \PHPUnit_Framework_TestCase
 {
-    /**
-     * @group legacy
-     */
     public function testIsGrantedTrue()
     {
         $media = $this->getMock('Sonata\MediaBundle\Model\MediaInterface');
         $request = $this->getMock('Symfony\Component\HttpFoundation\Request');
-        $security = $this->getMock('Symfony\Component\Security\Core\SecurityContextInterface');
         $translator = $this->getMock('Symfony\Component\Translation\TranslatorInterface');
 
+        // Prefer the Syfmony 2.6+ API if available
+        if (interface_exists('Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface')) {
+            $security = $this->getMock('Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface');
+        } else {
+            $security = $this->getMock('Symfony\Component\Security\Core\SecurityContextInterface');
+        }
+
         $security->expects($this->any())
             ->method('isGranted')
             ->will($this->returnCallback(function (array $roles) {
                 return in_array('ROLE_ADMIN', $roles);
             }));
-        $security->expects($this->once())
-            ->method('getToken')
-            ->will(($this->returnValue(true)));
 
         $strategy = new RolesDownloadStrategy($translator, $security, array('ROLE_ADMIN'));
         $this->assertTrue($strategy->isGranted($media, $request));
@@ -44,7 +44,12 @@ public function testIsGrantedFalse()
         $request = $this->getMock('Symfony\Component\HttpFoundation\Request');
         $translator = $this->getMock('Symfony\Component\Translation\TranslatorInterface');
 
-        $security = $this->getMock('Symfony\Component\Security\Core\SecurityContextInterface');
+        // Prefer the Syfmony 2.6+ API if available
+        if (interface_exists('Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface')) {
+            $security = $this->getMock('Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface');
+        } else {
+            $security = $this->getMock('Symfony\Component\Security\Core\SecurityContextInterface');
+        }
 
         $security->expects($this->any())
             ->method('isGranted')
@@ -52,10 +57,6 @@ public function testIsGrantedFalse()
                 return in_array('FOO', $roles);
             }));
 
-        $security->expects($this->once())
-            ->method('getToken')
-            ->will(($this->returnValue(true)));
-
         $strategy = new RolesDownloadStrategy($translator, $security, array('ROLE_ADMIN'));
         $this->assertFalse($strategy->isGranted($media, $request));
     }
diff --git a/Tests/Validator/FormatValidatorTest.php b/Tests/Validator/FormatValidatorTest.php
index 087aa3bac..41910f5f5 100644
--- a/Tests/Validator/FormatValidatorTest.php
+++ b/Tests/Validator/FormatValidatorTest.php
@@ -17,9 +17,6 @@
 
 class FormatValidatorTest extends \PHPUnit_Framework_TestCase
 {
-    /**
-     * @group legacy
-     */
     public function testValidate()
     {
         $pool = new Pool('defaultContext');
@@ -29,7 +26,14 @@ public function testValidate()
         $gallery->expects($this->once())->method('getDefaultFormat')->will($this->returnValue('format1'));
         $gallery->expects($this->once())->method('getContext')->will($this->returnValue('test'));
 
-        $context = $this->getMock('Symfony\Component\Validator\ExecutionContext', array(), array(), '', false);
+        // Prefer the Syfmony 2.5+ API if available
+        if (class_exists('Symfony\Component\Validator\Context\ExecutionContext')) {
+            $contextClass = 'Symfony\Component\Validator\Context\ExecutionContext';
+        } else {
+            $contextClass = 'Symfony\Component\Validator\ExecutionContext';
+        }
+
+        $context = $this->getMock($contextClass, array(), array(), '', false);
         $context->expects($this->never())->method('addViolation');
 
         $validator = new FormatValidator($pool);
@@ -47,7 +51,14 @@ public function testValidateWithValidContext()
         $gallery->expects($this->once())->method('getDefaultFormat')->will($this->returnValue('format1'));
         $gallery->expects($this->once())->method('getContext')->will($this->returnValue('test'));
 
-        $context = $this->getMock('Symfony\Component\Validator\ExecutionContext', array(), array(), '', false);
+        // Prefer the Syfmony 2.5+ API if available
+        if (class_exists('Symfony\Component\Validator\Context\ExecutionContext')) {
+            $contextClass = 'Symfony\Component\Validator\Context\ExecutionContext';
+        } else {
+            $contextClass = 'Symfony\Component\Validator\ExecutionContext';
+        }
+
+        $context = $this->getMock($contextClass, array(), array(), '', false);
         $context->expects($this->once())->method('addViolation');
 
         $validator = new FormatValidator($pool);
diff --git a/Validator/FormatValidator.php b/Validator/FormatValidator.php
index e03324c50..f80f1d782 100644
--- a/Validator/FormatValidator.php
+++ b/Validator/FormatValidator.php
@@ -15,6 +15,7 @@
 use Sonata\MediaBundle\Provider\Pool;
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\ExecutionContextInterface as LegacyExecutionContextInterface;
 
 class FormatValidator extends ConstraintValidator
 {
@@ -39,7 +40,14 @@ public function validate($value, Constraint $constraint)
         $formats = $this->pool->getFormatNamesByContext($value->getContext());
 
         if (!$value instanceof GalleryInterface) {
-            $this->context->addViolationAtPath('defaultFormat', 'Invalid instance, expected GalleryInterface');
+            // Interface compatibility, support for LegacyExecutionContextInterface can be removed when support for Symfony <2.5 is dropped
+            if ($this->context instanceof LegacyExecutionContextInterface) {
+                $this->context->addViolationAt('defaultFormat', 'Invalid instance, expected GalleryInterface');
+            } else {
+                $this->context->buildViolation('Invalid instance, expected GalleryInterface')
+                   ->atPath('defaultFormat')
+                   ->addViolation();
+            }
         }
 
         if (!array_key_exists($value->getDefaultFormat(), $formats)) {
diff --git a/composer.json b/composer.json
index dac3d1db2..00dbd4581 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     ],
     "require": {
         "symfony/framework-bundle": "~2.3|~3.0",
-        "sonata-project/core-bundle": "~2.3,>=2.3.10",
+        "sonata-project/core-bundle": "^2.3.10",
         "sonata-project/notification-bundle": "~2.2",
         "sonata-project/easy-extends-bundle": "~2.1",
         "sonata-project/doctrine-extensions": "~1.0",
@@ -34,13 +34,14 @@
         "sonata-project/admin-bundle": "~2.3",
         "sonata-project/formatter-bundle": "~2.2",
         "sonata-project/datagrid-bundle": "~2.2",
-        "sonata-project/seo-bundle": "~1.1.5|~2.0",
+        "sonata-project/seo-bundle": "^1.1.5|~2.0",
+        "sonata-project/block-bundle": "^2.3.7",
         "aws/aws-sdk-php": "~2.7",
         "doctrine/mongodb-odm": "~1.0",
         "jackalope/jackalope-doctrine-dbal": "~1.1",
         "symfony/phpunit-bridge": "~2.7|~3.0",
-        "friendsofsymfony/rest-bundle": "~1.1",
-        "nelmio/api-doc-bundle": "~2.4"
+        "friendsofsymfony/rest-bundle": "^1.7.4|~2.0",
+        "nelmio/api-doc-bundle": "~2.11"
     },
     "suggest": {
         "sonata-project/doctrine-orm-admin-bundle": "~2.3",