diff --git a/composer.json b/composer.json
index 21479ab8088..e09e177396f 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,7 @@
     "require-dev": {
         "behat/mink": "^1.8",
         "behat/mink-goutte-driver": "^1.2",
+        "behat/mink-browserkit-driver": "dev-SF5 as v1.3.4",
         "behat/mink-selenium2-driver": "^1.4",
         "composer/composer": "^1.9.1",
         "drupal/coder": "^8.3.7",
@@ -101,6 +102,10 @@
         "phpcbf": "phpcbf --standard=core/phpcs.xml.dist --runtime-set installed_paths $($COMPOSER_BINARY config vendor-dir)/drupal/coder/coder_sniffer --"
     },
     "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/mdlutz24/MinkBrowserKitDriver.git"
+        },
         {
             "type": "composer",
             "url": "https://packages.drupal.org/8"
diff --git a/composer.lock b/composer.lock
index 796acb8f42a..fca9c270c69 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": "ef1bde282aaecd53793120c55ae76e46",
+    "content-hash": "e1837fbf4848d5dee7eff257230b9aaf",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -3830,23 +3830,23 @@
         },
         {
             "name": "behat/mink-browserkit-driver",
-            "version": "v1.3.4",
+            "version": "dev-SF5",
             "source": {
                 "type": "git",
-                "url": "https://github.com/minkphp/MinkBrowserKitDriver.git",
-                "reference": "e3b90840022ebcd544c7b394a3c9597ae242cbee"
+                "url": "https://github.com/mdlutz24/MinkBrowserKitDriver.git",
+                "reference": "dc566b2cb383a4f09907d3586a80281d8ac0f453"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/minkphp/MinkBrowserKitDriver/zipball/e3b90840022ebcd544c7b394a3c9597ae242cbee",
-                "reference": "e3b90840022ebcd544c7b394a3c9597ae242cbee",
+                "url": "https://api.github.com/repos/mdlutz24/MinkBrowserKitDriver/zipball/dc566b2cb383a4f09907d3586a80281d8ac0f453",
+                "reference": "dc566b2cb383a4f09907d3586a80281d8ac0f453",
                 "shasum": ""
             },
             "require": {
                 "behat/mink": "^1.7.1@dev",
                 "php": ">=5.3.6",
-                "symfony/browser-kit": "~2.3|~3.0|~4.0",
-                "symfony/dom-crawler": "~2.3|~3.0|~4.0"
+                "symfony/browser-kit": "~2.3|~3.0|~4.0|~5.0",
+                "symfony/dom-crawler": "~2.3|~3.0|~4.0|~5.0"
             },
             "require-dev": {
                 "mink/driver-testsuite": "dev-master",
@@ -3864,7 +3864,11 @@
                     "Behat\\Mink\\Driver\\": "src/"
                 }
             },
-            "notification-url": "https://packagist.org/downloads/",
+            "autoload-dev": {
+                "psr-4": {
+                    "Behat\\Mink\\Tests\\Driver\\": "tests"
+                }
+            },
             "license": [
                 "MIT"
             ],
@@ -3883,7 +3887,10 @@
                 "browser",
                 "testing"
             ],
-            "time": "2020-03-11T09:49:45+00:00"
+            "support": {
+                "source": "https://github.com/mdlutz24/MinkBrowserKitDriver/tree/SF5"
+            },
+            "time": "2020-09-21T18:40:47+00:00"
         },
         {
             "name": "behat/mink-goutte-driver",
@@ -6566,12 +6573,20 @@
             "time": "2020-07-08T17:02:28+00:00"
         }
     ],
-    "aliases": [],
+    "aliases": [
+        {
+            "alias": "v1.3.4",
+            "alias_normalized": "1.3.4.0",
+            "version": "dev-SF5",
+            "package": "behat/mink-browserkit-driver"
+        }
+    ],
     "minimum-stability": "dev",
     "stability-flags": {
         "drupal/core": 20,
         "drupal/core-project-message": 20,
-        "drupal/core-vendor-hardening": 20
+        "drupal/core-vendor-hardening": 20,
+        "behat/mink-browserkit-driver": 20
     },
     "prefer-stable": true,
     "prefer-lowest": false,
diff --git a/composer/Metapackage/DevDependencies/composer.json b/composer/Metapackage/DevDependencies/composer.json
index c9c01af5ef5..0bb6fccc0c1 100644
--- a/composer/Metapackage/DevDependencies/composer.json
+++ b/composer/Metapackage/DevDependencies/composer.json
@@ -8,6 +8,7 @@
     },
     "require": {
         "behat/mink": "^1.8",
+        "behat/mink-browserkit-driver": "dev-SF5 as v1.3.4",
         "behat/mink-goutte-driver": "^1.2",
         "behat/mink-selenium2-driver": "^1.4",
         "composer/composer": "^1.9.1",
diff --git a/composer/Metapackage/PinnedDevDependencies/composer.json b/composer/Metapackage/PinnedDevDependencies/composer.json
index f032858e0a9..131336ef9cc 100644
--- a/composer/Metapackage/PinnedDevDependencies/composer.json
+++ b/composer/Metapackage/PinnedDevDependencies/composer.json
@@ -9,7 +9,7 @@
     "require": {
         "drupal/core": "9.1.x-dev",
         "behat/mink": "v1.8.1",
-        "behat/mink-browserkit-driver": "v1.3.4",
+        "behat/mink-browserkit-driver": "dev-SF5",
         "behat/mink-goutte-driver": "v1.2.1",
         "behat/mink-selenium2-driver": "v1.4.0",
         "composer/ca-bundle": "1.2.8",
diff --git a/core/composer.json b/core/composer.json
index ff9a9a60a37..dc97cf799cc 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -23,6 +23,7 @@
         "symfony/event-dispatcher": "^4.4|^5.1",
         "symfony/http-foundation": "^4.4.7|^5.1",
         "symfony/http-kernel": "^4.4|^5.1",
+        "symfony/mime": "^4.3|^5.1",
         "symfony/routing": "^4.4|^5.1",
         "symfony/serializer": "^4.4|^5.1",
         "symfony/translation": "^4.4|^5.1",
diff --git a/core/drupalci.yml b/core/drupalci.yml
index 47dac6ea5ce..269c69e26b3 100644
--- a/core/drupalci.yml
+++ b/core/drupalci.yml
@@ -15,7 +15,7 @@ build:
         sniff-all-files: false
         halt-on-fail: false
       container_command:
-        commands: "cd ${SOURCE_DIR} && rm -rf vendor/drupal/coder && composer update -n && rm -rf vendor/behat/mink-browserkit-driver && git clonehttps://github.com/Daniel-Marynicz/MinkBrowserKitDriver.git vendor/behat/mink-browserkit-driver"
+        commands: "cd ${SOURCE_DIR} && rm -rf vendor/drupal/coder && composer update -n"
     testing:
       # run_tests task is executed several times in order of performance speeds.
       # halt-on-fail can be set on the run_tests tasks in order to fail fast.