diff --git a/composer.lock b/composer.lock
index 4296831..1a5d33f 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": "f6651085b9126bbee49377e825a978e1",
+    "content-hash": "654d6c4cb4e802303193853142fcccdc",
     "packages": [
         {
             "name": "aliyuncs/oss-sdk-php",
@@ -4732,6 +4732,11 @@
                 "MIT"
             ],
             "authors": [
+                {
+                    "name": "Ben Ramsey",
+                    "email": "ben@benramsey.com",
+                    "homepage": "https://benramsey.com"
+                },
                 {
                     "name": "Marijn Huizendveld",
                     "email": "marijn.huizendveld@gmail.com"
@@ -4739,11 +4744,6 @@
                 {
                     "name": "Thibaud Fabre",
                     "email": "thibaud@aztech.io"
-                },
-                {
-                    "name": "Ben Ramsey",
-                    "email": "ben@benramsey.com",
-                    "homepage": "https://benramsey.com"
                 }
             ],
             "description": "Formerly rhumsaa/uuid. A PHP 5.4+ library for generating RFC 4122 version 1, 3, 4, and 5 universally unique identifiers (UUID).",
@@ -6913,16 +6913,16 @@
         },
         {
             "name": "symfony/var-exporter",
-            "version": "v4.3.5",
+            "version": "v4.4.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/var-exporter.git",
-                "reference": "d5b4e2d334c1d80e42876c7d489896cfd37562f2"
+                "reference": "1a76a943f2af334da13bc9f33f49392fa530eec9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-exporter/zipball/d5b4e2d334c1d80e42876c7d489896cfd37562f2",
-                "reference": "d5b4e2d334c1d80e42876c7d489896cfd37562f2",
+                "url": "https://api.github.com/repos/symfony/var-exporter/zipball/1a76a943f2af334da13bc9f33f49392fa530eec9",
+                "reference": "1a76a943f2af334da13bc9f33f49392fa530eec9",
                 "shasum": "",
                 "mirrors": [
                     {
@@ -6935,12 +6935,12 @@
                 "php": "^7.1.3"
             },
             "require-dev": {
-                "symfony/var-dumper": "^4.1.1"
+                "symfony/var-dumper": "^4.1.1|^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.3-dev"
+                    "dev-master": "4.4-dev"
                 }
             },
             "autoload": {
@@ -6975,7 +6975,7 @@
                 "instantiate",
                 "serialize"
             ],
-            "time": "2019-08-22T07:33:08+00:00"
+            "time": "2020-01-04T13:00:46+00:00"
         },
         {
             "name": "teamtnt/laravel-scout-tntsearch-driver",