diff --git a/composer.lock b/composer.lock
index 4d2a28dd1f..8bcb7affc5 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1038,16 +1038,16 @@
         },
         {
             "name": "league/commonmark",
-            "version": "0.13.2",
+            "version": "0.13.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/commonmark.git",
-                "reference": "35ac362082ca983a8123df2ee2cdfcf456ab6295"
+                "reference": "35816f39eb2498484fbb7b1495633a976ee1a8de"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/35ac362082ca983a8123df2ee2cdfcf456ab6295",
-                "reference": "35ac362082ca983a8123df2ee2cdfcf456ab6295",
+                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/35816f39eb2498484fbb7b1495633a976ee1a8de",
+                "reference": "35816f39eb2498484fbb7b1495633a976ee1a8de",
                 "shasum": ""
             },
             "require": {
@@ -1058,6 +1058,7 @@
                 "colinodell/commonmark-php": "*"
             },
             "require-dev": {
+                "cebe/markdown": "~1.0",
                 "erusev/parsedown": "~1.0",
                 "jgm/commonmark": "0.25",
                 "michelf/php-markdown": "~1.4",
@@ -1102,7 +1103,7 @@
                 "markdown",
                 "parser"
             ],
-            "time": "2016-03-27 19:10:13"
+            "time": "2016-05-21 18:41:30"
         },
         {
             "name": "league/csv",