diff --git a/prefixer/composer.json b/prefixer/composer.json
index 57e3ae667e..4894591a89 100644
--- a/prefixer/composer.json
+++ b/prefixer/composer.json
@@ -1,13 +1,13 @@
 {
   "require": {
     "php": ">=5.6",
-    "symfony/dependency-injection": "3.4.26",
+    "gregwar/captcha": "^1.1",
     "monolog/monolog": "^1.23",
     "sabberworm/php-css-parser": "^8.1",
-    "twig/twig": "1.38.4",
-    "symfony/polyfill-php72": "^1.11",
+    "symfony/dependency-injection": "3.4.26",
     "symfony/polyfill-mbstring": "^1.11",
-    "gregwar/captcha": "^1.1"
+    "symfony/polyfill-php72": "^1.11",
+    "twig/twig": "1.38.4"
   },
   "scripts": {
     "post-update-cmd": "@process",
@@ -23,6 +23,7 @@
   "config": {
     "platform": {
       "php": "5.6"
-    }
+    },
+    "sort-packages": true
   }
 }
diff --git a/prefixer/composer.lock b/prefixer/composer.lock
index 4c6292bfdf..5d571717b9 100644
--- a/prefixer/composer.lock
+++ b/prefixer/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": "12db0ff7da561923463454e3da7f3b32",
+    "content-hash": "ad7d36b8532fdc088a8da2d688167bbb",
     "packages": [
         {
             "name": "gregwar/captcha",
@@ -442,7 +442,7 @@
                 },
                 {
                     "name": "Gert de Pagter",
-                    "email": "backendtea@gmail.com"
+                    "email": "BackEndTea@gmail.com"
                 }
             ],
             "description": "Symfony polyfill for ctype functions",