diff --git a/.travis.yml b/.travis.yml
index fe2367d976..2db6f4a00a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,7 +45,6 @@ before_script:
   - echo "extension=imagick.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`
 
 php:
-  - 5.3
   - 5.4
   - 5.5
 
diff --git a/composer.json b/composer.json
index 7fe9d435a6..eaec81f445 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
         "bin-dir" : "bin/"
     },
     "require": {
-        "php"                              : ">=5.3.3",
+        "php"                              : ">=5.4",
         "alchemy/oauth2php"                : "1.0.0",
         "alchemy/phlickr"                  : "0.2.7",
         "alchemy/task-manager"             : "~1.0",
diff --git a/composer.lock b/composer.lock
index 8a3b5eae03..8ca6e4bc07 100644
--- a/composer.lock
+++ b/composer.lock
@@ -3,7 +3,7 @@
         "This file locks the dependencies of your project to a known state",
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file"
     ],
-    "hash": "824ef5ec6611bd40f198e043c19d409e",
+    "hash": "9adc21c7c8c7337bf913c5c3f5ba65fb",
     "packages": [
         {
             "name": "alchemy-fr/tcpdf-clone",
@@ -1635,16 +1635,16 @@
         },
         {
             "name": "monolog/monolog",
-            "version": "1.6.0",
+            "version": "1.7.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Seldaek/monolog.git",
-                "reference": "f72392d0e6eb855118f5a84e89ac2d257c704abd"
+                "reference": "6225b22de9dcf36546be3a0b2fa8e3d986153f57"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/f72392d0e6eb855118f5a84e89ac2d257c704abd",
-                "reference": "f72392d0e6eb855118f5a84e89ac2d257c704abd",
+                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/6225b22de9dcf36546be3a0b2fa8e3d986153f57",
+                "reference": "6225b22de9dcf36546be3a0b2fa8e3d986153f57",
                 "shasum": ""
             },
             "require": {
@@ -1652,21 +1652,26 @@
                 "psr/log": "~1.0"
             },
             "require-dev": {
+                "aws/aws-sdk-php": "~2.4.8",
                 "doctrine/couchdb": "dev-master",
                 "mlehner/gelf-php": "1.0.*",
-                "raven/raven": "0.5.*"
+                "phpunit/phpunit": "~3.7.0",
+                "raven/raven": "0.5.*",
+                "ruflin/elastica": "0.90.*"
             },
             "suggest": {
+                "aws/aws-sdk-php": "Allow sending log messages to AWS services like DynamoDB",
                 "doctrine/couchdb": "Allow sending log messages to a CouchDB server",
                 "ext-amqp": "Allow sending log messages to an AMQP server (1.0+ required)",
                 "ext-mongo": "Allow sending log messages to a MongoDB server",
                 "mlehner/gelf-php": "Allow sending log messages to a GrayLog2 server",
-                "raven/raven": "Allow sending log messages to a Sentry server"
+                "raven/raven": "Allow sending log messages to a Sentry server",
+                "ruflin/elastica": "Allow sending log messages to an Elastic Search server"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.6.x-dev"
+                    "dev-master": "1.7.x-dev"
                 }
             },
             "autoload": {
@@ -1693,7 +1698,7 @@
                 "logging",
                 "psr-3"
             ],
-            "time": "2013-07-28 22:38:30"
+            "time": "2013-11-14 19:48:31"
         },
         {
             "name": "mrclay/minify",
@@ -2821,12 +2826,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/symfony.git",
-                "reference": "b76ac2f865bae2e2ca87302935f5d9a458f1401f"
+                "reference": "4e9332b6b66d52750142e5b32cc754620f875fe7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/symfony/zipball/b76ac2f865bae2e2ca87302935f5d9a458f1401f",
-                "reference": "b76ac2f865bae2e2ca87302935f5d9a458f1401f",
+                "url": "https://api.github.com/repos/symfony/symfony/zipball/4e9332b6b66d52750142e5b32cc754620f875fe7",
+                "reference": "4e9332b6b66d52750142e5b32cc754620f875fe7",
                 "shasum": ""
             },
             "require": {
@@ -2926,7 +2931,7 @@
             "keywords": [
                 "framework"
             ],
-            "time": "2013-11-09 16:01:15"
+            "time": "2013-11-17 08:45:14"
         },
         {
             "name": "themattharris/tmhoauth",
@@ -4103,7 +4108,7 @@
         "behat/gherkin": 20
     },
     "platform": {
-        "php": ">=5.3.3"
+        "php": ">=5.4"
     },
     "platform-dev": [
 
diff --git a/lib/Alchemy/Phrasea/Setup/Requirements/SystemRequirements.php b/lib/Alchemy/Phrasea/Setup/Requirements/SystemRequirements.php
index 44584c2c39..e7c84a4720 100644
--- a/lib/Alchemy/Phrasea/Setup/Requirements/SystemRequirements.php
+++ b/lib/Alchemy/Phrasea/Setup/Requirements/SystemRequirements.php
@@ -15,7 +15,7 @@ use Alchemy\Phrasea\Setup\RequirementCollection;
 
 class SystemRequirements extends RequirementCollection implements RequirementInterface
 {
-    const REQUIRED_PHP_VERSION = '5.3.3';
+    const REQUIRED_PHP_VERSION = '5.4.0';
 
     public function __construct()
     {
@@ -34,12 +34,6 @@ class SystemRequirements extends RequirementCollection implements RequirementInt
             sprintf('Install PHP %s or newer (installed version is %s)', self::REQUIRED_PHP_VERSION, $installedPhpVersion)
         );
 
-        $this->addRequirement(
-            version_compare($installedPhpVersion, '5.3.16', '!='),
-            'PHP version must not be 5.3.16 as Phraseanet won\'t work properly with it',
-            'Install PHP 5.3.17 or newer (or downgrade to an earlier PHP version)'
-        );
-
         $this->addRequirement(
             is_dir($baseDir.'/vendor/composer'),
             'Vendor libraries must be installed',
@@ -152,18 +146,6 @@ class SystemRequirements extends RequirementCollection implements RequirementInt
             'Install the <strong>PCRE</strong> extension (version 8.0+).'
         );
 
-        $this->addRecommendation(
-            version_compare($installedPhpVersion, '5.3.4', '>='),
-            'You should use at least PHP 5.3.4 due to PHP bug #52083 in earlier versions',
-            'Your project might malfunction randomly due to PHP bug #52083 ("Notice: Trying to get property of non-object"). Install PHP 5.3.4 or newer.'
-        );
-
-        $this->addRecommendation(
-            version_compare($installedPhpVersion, '5.3.8', '>='),
-            'When using annotations you should have at least PHP 5.3.8 due to PHP bug #55156',
-            'Install PHP 5.3.8 or newer if your project uses annotations.'
-        );
-
         $this->addRecommendation(
             version_compare($installedPhpVersion, '5.4.0', '!='),
             'You should not use PHP 5.4.0 due to the PHP bug #61453',