diff --git a/composer.json b/composer.json
index 0ac864eb01..a047ab4618 100644
--- a/composer.json
+++ b/composer.json
@@ -99,7 +99,7 @@
   },
   "scripts": {
     "pre-install-cmd": [
-      "php -r \"if (!(getenv('DYNO'))===false){file_exists('.env') || copy('.env.heroku', '.env');}else{echo 'Not in Heroku environment\n';}\""
+      "@php -r \"if (!(getenv('DYNO'))===false){file_exists('.env') || copy('.env.heroku', '.env');}\""
     ],
     "post-root-package-install": [
       "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
diff --git a/composer.lock b/composer.lock
index 88046c0b2d..44cce78bae 100644
--- a/composer.lock
+++ b/composer.lock
@@ -947,34 +947,34 @@
         },
         {
             "name": "league/commonmark",
-            "version": "0.16.0",
+            "version": "0.17.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/commonmark.git",
-                "reference": "c0e41be0f80c51ad3170c9c713f74a0b8dec59ce"
+                "reference": "3b4c2224524776a584de663c7a04bc8eb2e1544d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/c0e41be0f80c51ad3170c9c713f74a0b8dec59ce",
-                "reference": "c0e41be0f80c51ad3170c9c713f74a0b8dec59ce",
+                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/3b4c2224524776a584de663c7a04bc8eb2e1544d",
+                "reference": "3b4c2224524776a584de663c7a04bc8eb2e1544d",
                 "shasum": ""
             },
             "require": {
                 "ext-mbstring": "*",
-                "php": ">=5.4.8"
+                "php": ">=5.6.5"
             },
             "replace": {
                 "colinodell/commonmark-php": "*"
             },
             "require-dev": {
                 "cebe/markdown": "~1.0",
+                "commonmark/commonmark.js": "0.28",
                 "erusev/parsedown": "~1.0",
-                "jgm/commonmark": "0.28",
                 "michelf/php-markdown": "~1.4",
                 "mikehaertl/php-shellcommand": "~1.2.0",
-                "phpunit/phpunit": "^4.8.35|~5.7",
+                "phpunit/phpunit": "~5.7|~6.5",
                 "scrutinizer/ocular": "~1.1",
-                "symfony/finder": "~2.3|~3.0"
+                "symfony/finder": "~3.0|~4.0"
             },
             "suggest": {
                 "league/commonmark-extras": "Library of useful extensions including smart punctuation"
@@ -985,7 +985,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "0.17-dev"
+                    "dev-master": "0.18-dev"
                 }
             },
             "autoload": {
@@ -1012,7 +1012,7 @@
                 "markdown",
                 "parser"
             ],
-            "time": "2017-10-31T00:49:55+00:00"
+            "time": "2017-12-30T22:08:48+00:00"
         },
         {
             "name": "league/csv",