diff --git a/composer.json b/composer.json
index 725954e..2ae60e0 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "laravel/framework": "5.7.*",
         "laravel/tinker": "^1.0",
         "maatwebsite/excel": "^3.1",
-        "symfony/http-foundation": "4.2",
+        "symfony/http-foundation": "4.2.12",
         "zanysoft/laravel-zip": "^1.0"
     },
     "require-dev": {
diff --git a/composer.lock b/composer.lock
index 38aa9fe..0bd3d07 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": "a58325fd32702d6885e16ddc204916fc",
+    "content-hash": "8364b590ac239ac790cabd9ab789e637",
     "packages": [
         {
             "name": "dnoegel/php-xdg-base-dir",
@@ -2671,16 +2671,16 @@
         },
         {
             "name": "symfony/http-foundation",
-            "version": "v4.2.1",
+            "version": "v4.2.12",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "1b31f3017fadd8cb05cf2c8aebdbf3b12a943851"
+                "reference": "2ae778ff4a1f8baba7724db1ca977ada3b796749"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/1b31f3017fadd8cb05cf2c8aebdbf3b12a943851",
-                "reference": "1b31f3017fadd8cb05cf2c8aebdbf3b12a943851",
+                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/2ae778ff4a1f8baba7724db1ca977ada3b796749",
+                "reference": "2ae778ff4a1f8baba7724db1ca977ada3b796749",
                 "shasum": ""
             },
             "require": {
@@ -2721,7 +2721,10 @@
             ],
             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2018-11-26T10:55:26+00:00"
+            "support": {
+                "source": "https://github.com/symfony/http-foundation/tree/v4.2.12"
+            },
+            "time": "2019-11-11T12:54:47+00:00"
         },
         {
             "name": "symfony/http-kernel",
@@ -2872,20 +2875,20 @@
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.10.0",
+            "version": "v1.20.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "c79c051f5b3a46be09205c73b80b346e4153e494"
+                "reference": "39d483bdf39be819deabf04ec872eb0b2410b531"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/c79c051f5b3a46be09205c73b80b346e4153e494",
-                "reference": "c79c051f5b3a46be09205c73b80b346e4153e494",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/39d483bdf39be819deabf04ec872eb0b2410b531",
+                "reference": "39d483bdf39be819deabf04ec872eb0b2410b531",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": ">=7.1"
             },
             "suggest": {
                 "ext-mbstring": "For best performance"
@@ -2893,7 +2896,11 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.9-dev"
+                    "dev-main": "1.20-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
                 }
             },
             "autoload": {
@@ -2927,7 +2934,24 @@
                 "portable",
                 "shim"
             ],
-            "time": "2018-09-21T13:07:52+00:00"
+            "support": {
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.20.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-10-23T14:02:19+00:00"
         },
         {
             "name": "symfony/polyfill-php72",
@@ -5246,5 +5270,6 @@
     "platform": {
         "php": "^7.1.3"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
 }