diff --git a/composer.json b/composer.json
index d8a9cc55..2181b7fb 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
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       , "cboden/Ratchet": "0.3.*"
       , "silex/silex": "1.0.*@dev"
-      , "twig/twig": "1.10.*"
+      , "twig/twig": "1.42.*"
       , "monolog/monolog": "~1.6"
       , "cujojs/when": "dev-master"
       , "tavendo/autobahnjs": "dev-master"
diff --git a/composer.lock b/composer.lock
index 9eb19597..85b3ce2d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,22 +1,22 @@
 {
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-        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
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@@ -64,7 +64,7 @@
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@@ -110,7 +110,7 @@
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+            "time": "2012-11-02T14:49:47+00:00"
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@@ -121,7 +121,7 @@
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+            "time": "2015-11-07T09:30:47+00:00"
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@@ -129,12 +129,12 @@
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-                "url": "https://github.com/guzzle/common.git",
+                "url": "https://github.com/Guzzle3/common.git",
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@@ -165,7 +165,8 @@
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@@ -173,12 +174,12 @@
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+                "url": "https://github.com/Guzzle3/http.git",
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@@ -222,7 +223,8 @@
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+            "abandoned": "guzzle/guzzle",
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@@ -230,12 +232,12 @@
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-                "url": "https://github.com/guzzle/parser.git",
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@@ -266,7 +268,8 @@
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@@ -274,12 +277,12 @@
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-                "url": "https://github.com/guzzle/stream.git",
+                "url": "https://github.com/Guzzle3/stream.git",
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@@ -319,7 +322,8 @@
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+            "abandoned": "guzzle/guzzle",
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@@ -387,19 +391,19 @@
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+            "time": "2014-06-04T16:30:04+00:00"
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-                "url": "https://github.com/fabpot/Pimple.git",
+                "url": "https://github.com/silexphp/Pimple.git",
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@@ -424,9 +428,7 @@
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-                    "homepage": "http://fabien.potencier.org",
-                    "role": "Lead Developer"
+                    "email": "fabien@symfony.com"
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@@ -435,20 +437,20 @@
                 "container",
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+            "time": "2013-11-22T08:30:29+00:00"
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+                "url": "https://github.com/php-fig/log.git",
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@@ -473,7 +475,7 @@
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@@ -516,7 +518,7 @@
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-            "time": "2014-02-26 17:36:58"
+            "time": "2014-02-26T17:36:58+00:00"
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@@ -557,7 +559,7 @@
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-            "time": "2014-05-25 17:02:16"
+            "time": "2014-05-25T17:02:16+00:00"
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@@ -601,7 +603,7 @@
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@@ -685,7 +687,8 @@
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+            "abandoned": "symfony/flex",
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@@ -693,12 +696,12 @@
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-                "url": "https://github.com/symfony/Debug.git",
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@@ -729,20 +732,19 @@
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-                    "role": "Lead Developer"
-                },
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                     "name": "Symfony Community",
                     "homepage": "http://symfony.com/contributors"
+                },
+                {
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-            "time": "2014-05-25 14:44:21"
+            "abandoned": "symfony/error-handler",
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-                "url": "https://github.com/symfony/EventDispatcher.git",
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-                "url": "https://github.com/symfony/HttpFoundation.git",
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@@ -837,20 +837,18 @@
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@@ -858,12 +856,12 @@
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@@ -910,20 +908,94 @@
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+            "time": "2014-05-31T02:04:21+00:00"
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+                    "email": "BackEndTea@gmail.com"
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+                "ctype",
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@@ -931,12 +1003,12 @@
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@@ -970,20 +1042,18 @@
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-                    "role": "Lead Developer"
-                },
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                     "name": "Symfony Community",
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+                },
+                {
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+                    "email": "fabien@symfony.com"
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-            "time": "2014-04-23 13:35:47"
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@@ -994,63 +1064,77 @@
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+                "reference": "21707d6ebd05476854805e4f91b836531941bcd4",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.2.4"
+                "php": ">=5.4.0",
+                "symfony/polyfill-ctype": "^1.8"
+            },
+            "require-dev": {
+                "psr/container": "^1.0",
+                "symfony/debug": "^2.7",
+                "symfony/phpunit-bridge": "^3.4.19|^4.1.8|^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.10-dev"
+                    "dev-master": "1.42-dev"
                 }
             },
             "autoload": {
                 "psr-0": {
                     "Twig_": "lib/"
+                },
+                "psr-4": {
+                    "Twig\\": "src/"
                 }
             },
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "BSD-3"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
                     "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
+                    "email": "fabien@symfony.com",
+                    "homepage": "http://fabien.potencier.org",
+                    "role": "Lead Developer"
                 },
                 {
                     "name": "Armin Ronacher",
-                    "email": "armin.ronacher@active-4.com"
+                    "email": "armin.ronacher@active-4.com",
+                    "role": "Project Founder"
+                },
+                {
+                    "name": "Twig Team",
+                    "homepage": "https://twig.symfony.com/contributors",
+                    "role": "Contributors"
                 }
             ],
             "description": "Twig, the flexible, fast, and secure template language for PHP",
-            "homepage": "http://twig.sensiolabs.org",
+            "homepage": "https://twig.symfony.com",
             "keywords": [
                 "templating"
             ],
-            "time": "2012-10-19 03:45:49"
+            "time": "2019-06-18T15:35:16+00:00"
         }
     ],
-    "packages-dev": [
-
-    ],
-    "aliases": [
-
-    ],
+    "packages-dev": [],
+    "aliases": [],
     "minimum-stability": "stable",
     "stability-flags": {
         "silex/silex": 20,
@@ -1058,10 +1142,11 @@
         "tavendo/autobahnjs": 20,
         "gimite/web-socket-js": 20
     },
+    "prefer-stable": false,
+    "prefer-lowest": false,
     "platform": {
         "php": ">=5.4.0"
     },
-    "platform-dev": [
-
-    ]
+    "platform-dev": [],
+    "plugin-api-version": "1.1.0"
 }