diff --git a/composer.json b/composer.json
index 4a72a48..e348880 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "ext-curl": "*"
     },
     "require-dev": {
-        "squizlabs/php_codesniffer": "1.5.3",
+        "squizlabs/php_codesniffer": "2.8.1",
         "phpstan/phpstan": "0.8.5"
     },
     "autoload": {
diff --git a/composer.lock b/composer.lock
index e17d24c..0226e0c 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "4ed89590f9984c21e413001452849383",
+    "content-hash": "3661bdf7b9b16ee20ec1911bd6e03e45",
     "packages": [
         {
             "name": "psr/log",
@@ -797,32 +797,35 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "1.5.3",
+            "version": "2.8.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
-                "reference": "396178ada8499ec492363587f037125bf7b07fcc"
+                "reference": "d7cf0d894e8aa4c73712ee4a331cc1eaa37cdc7d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/396178ada8499ec492363587f037125bf7b07fcc",
-                "reference": "396178ada8499ec492363587f037125bf7b07fcc",
+                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/d7cf0d894e8aa4c73712ee4a331cc1eaa37cdc7d",
+                "reference": "d7cf0d894e8aa4c73712ee4a331cc1eaa37cdc7d",
                 "shasum": ""
             },
             "require": {
+                "ext-simplexml": "*",
                 "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
                 "php": ">=5.1.2"
             },
-            "suggest": {
-                "phpunit/php-timer": "dev-master"
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
             },
             "bin": [
-                "scripts/phpcs"
+                "scripts/phpcs",
+                "scripts/phpcbf"
             ],
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-phpcs-fixer": "2.0.x-dev"
+                    "dev-master": "2.x-dev"
                 }
             },
             "autoload": {
@@ -831,12 +834,12 @@
                     "CodeSniffer/CLI.php",
                     "CodeSniffer/Exception.php",
                     "CodeSniffer/File.php",
+                    "CodeSniffer/Fixer.php",
                     "CodeSniffer/Report.php",
                     "CodeSniffer/Reporting.php",
                     "CodeSniffer/Sniff.php",
                     "CodeSniffer/Tokens.php",
                     "CodeSniffer/Reports/",
-                    "CodeSniffer/CommentParser/",
                     "CodeSniffer/Tokenizers/",
                     "CodeSniffer/DocGenerators/",
                     "CodeSniffer/Standards/AbstractPatternSniff.php",
@@ -862,13 +865,18 @@
                     "role": "lead"
                 }
             ],
-            "description": "PHP_CodeSniffer tokenises PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.",
+            "description": "PHP_CodeSniffer tokenizes PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.",
             "homepage": "http://www.squizlabs.com/php-codesniffer",
             "keywords": [
                 "phpcs",
                 "standards"
             ],
-            "time": "2014-05-01T03:07:07+00:00"
+            "support": {
+                "issues": "https://github.com/squizlabs/PHP_CodeSniffer/issues",
+                "source": "https://github.com/squizlabs/PHP_CodeSniffer",
+                "wiki": "https://github.com/squizlabs/PHP_CodeSniffer/wiki"
+            },
+            "time": "2017-03-01T22:17:45+00:00"
         },
         {
             "name": "symfony/console",
@@ -1119,5 +1127,6 @@
         "ext-json": "*",
         "ext-curl": "*"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.2.0"
 }