title: Issue with Composer Updating Laravel to 6
body: <p>So, I've been trying to run composer update in an attempt to update my Laravel version from 5.8 to ^6.0. Every attempt has failed, with an error message of this or similar to this:</p>
  
  <pre><code>composer update
  Loading composer repositories with package information
  Updating dependencies (including require-dev)
  Your requirements could not be resolved to an installable set of packages.
  
    Problem 1
      - Conclusion: remove adldap2/adldap2 v8.1.5
      - Conclusion: don't install adldap2/adldap2 v8.1.5
      - Conclusion: don't install adldap2/adldap2 v8.1.4
      - Conclusion: don't install adldap2/adldap2 v8.1.3
      - Conclusion: don't install adldap2/adldap2 v8.1.2
      - Conclusion: don't install adldap2/adldap2 v8.1.1
      - Conclusion: don't install laravel/framework v6.18.18
      - Conclusion: don't install laravel/framework v6.18.17
      - Conclusion: don't install laravel/framework v6.18.16
      - Conclusion: don't install laravel/framework v6.18.15
      - Conclusion: don't install laravel/framework v6.18.14
      - Conclusion: don't install laravel/framework v6.18.13
      - Conclusion: don't install laravel/framework v6.18.12
      - Conclusion: don't install laravel/framework v6.18.11
      - Conclusion: don't install laravel/framework v6.18.10
      - Conclusion: don't install laravel/framework v6.18.9
      - Conclusion: don't install laravel/framework v6.18.8
      - Conclusion: don't install laravel/framework v6.18.7
      - Conclusion: don't install laravel/framework v6.18.6
      - Conclusion: don't install laravel/framework v6.18.5
      - Conclusion: don't install laravel/framework v6.18.4
      - Conclusion: don't install laravel/framework v6.18.3
      - Conclusion: don't install laravel/framework v6.18.2
      - Conclusion: don't install laravel/framework v6.18.1
      - Conclusion: don't install laravel/framework v6.18.0
      - Conclusion: don't install laravel/framework v6.17.1
      - Conclusion: don't install laravel/framework v6.17.0
      - Conclusion: don't install laravel/framework v6.16.0
      - Conclusion: don't install laravel/framework v6.15.1
      - Conclusion: don't install laravel/framework v6.15.0
      - Conclusion: don't install laravel/framework v6.14.0
      - Conclusion: don't install laravel/framework v6.13.1
      - Conclusion: don't install laravel/framework v6.13.0
      - Conclusion: don't install laravel/framework v6.12.0
      - Conclusion: don't install laravel/framework v6.11.0
      - Conclusion: don't install laravel/framework v6.10.1
      - Conclusion: don't install laravel/framework v6.10.0
      - Conclusion: don't install laravel/framework v6.9.0
      - Conclusion: don't install laravel/framework v6.8.0
      - Conclusion: don't install laravel/framework v6.7.0
      - Conclusion: don't install laravel/framework v6.6.2
      - Conclusion: don't install laravel/framework v6.6.1
      - Conclusion: don't install laravel/framework v6.6.0
      - Conclusion: don't install laravel/framework v6.5.2
      - Conclusion: don't install laravel/framework v6.5.1
      - Conclusion: don't install laravel/framework v6.5.0
      - Conclusion: don't install laravel/framework v6.4.1
      - Conclusion: don't install laravel/framework v6.4.0
      - Conclusion: don't install laravel/framework v6.3.0
      - Conclusion: don't install laravel/framework v6.2.0
      - Conclusion: don't install laravel/framework v6.1.0
      - Conclusion: don't install laravel/framework v6.0.4
      - Conclusion: don't install laravel/framework v6.0.3
      - Conclusion: don't install laravel/framework v6.0.2
      - Conclusion: don't install laravel/framework v6.0.1
      - Installation request for adldap2/adldap2 ^8.1 -&gt; satisfiable by adldap2/adldap2[v8.1.0, v8.1.1, v8.1.2, v8.1.3, v8.1.4, v8.1.5].
      - Conclusion: don't install laravel/framework v6.0.0
      - adldap2/adldap2 v8.1.0 requires illuminate/support ~5.0 -&gt; satisfiable by laravel/framework[v5.6.39], illuminate/support[5.0.x-dev, 5.1.x-dev, 5.2.x-dev, 5.3.x-dev, 5.4.x-dev, 5.5.x-dev, 5.6.x-dev, 5.7.17, 5.7.18, 5.7.19, 5.7.x-dev, 5.8.x-dev, v5.0.0, v5.0.22, v5.0.25, v5.0.26, v5.0.28, v5.0.33, v5.0.4, v5.1.1, v5.1.13, v5.1.16, v5.1.2, v5.1.20, v5.1.22, v5.1.25, v5.1.28, v5.1.30, v5.1.31, v5.1.41, v5.1.6, v5.1.8, v5.2.0, v5.2.19, v5.2.21, v5.2.24, v5.2.25, v5.2.26, v5.2.27, v5.2.28, v5.2.31, v5.2.32, v5.2.37, v5.2.43, v5.2.45, v5.2.6, v5.2.7, v5.3.0, v5.3.16, v5.3.23, v5.3.4, v5.4.0, v5.4.13, v5.4.17, v5.4.19, v5.4.27, v5.4.36, v5.4.9, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44, v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9, v5.7.0, v5.7.1, v5.7.10, v5.7.11, v5.7.15, v5.7.2, v5.7.20, v5.7.21, v5.7.22, v5.7.23, v5.7.26, v5.7.27, v5.7.28, v5.7.3, v5.7.4, v5.7.5, v5.7.6, v5.7.7, v5.7.8, v5.7.9, v5.8.0, v5.8.11, v5.8.12, v5.8.14, v5.8.15, v5.8.17, v5.8.18, v5.8.19, v5.8.2, v5.8.20, v5.8.22, v5.8.24, v5.8.27, v5.8.28, v5.8.29, v5.8.3, v5.8.30, v5.8.31, v5.8.32, v5.8.33, v5.8.34, v5.8.35, v5.8.36, v5.8.4, v5.8.8, v5.8.9].
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.0.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.1.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.2.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.3.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.4.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.5.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.6.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.7.17
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.7.18
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.7.19
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.7.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support 5.8.x-dev
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.22
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.25
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.26
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.33
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.0.4
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.1
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.13
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.16
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.2
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.20
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.22
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.25
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.30
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.31
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.41
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.6
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.1.8
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.19
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.21
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.24
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.25
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.26
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.27
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.31
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.32
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.37
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.43
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.45
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.6
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.2.7
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.3.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.3.16
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.3.23
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.3.4
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.13
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.17
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.19
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.27
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.36
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.4.9
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.16
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.17
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.2
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.33
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.34
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.35
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.36
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.37
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.39
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.40
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.41
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.43
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.5.44
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.1
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.10
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.11
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.12
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.13
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.14
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.15
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.16
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.17
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.19
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.2
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.20
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.21
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.22
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.23
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.24
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.25
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.26
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.27
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.29
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.3
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.30
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.31
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.32
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.33
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.34
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.35
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.36
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.37
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.38
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.39
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.4
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.5
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.6
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.7
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.8
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.6.9
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.1
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.10
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.11
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.15
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.2
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.20
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.21
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.22
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.23
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.26
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.27
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.3
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.4
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.5
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.6
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.7
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.8
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.7.9
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.0
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.11
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.12
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.14
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.15
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.17
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.18
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.19
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.2
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.20
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.22
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.24
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.27
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.28
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.29
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.3
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.30
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.31
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.32
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.33
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.34
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.35
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.36
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.4
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.8
      - don't install laravel/framework 6.x-dev|don't install illuminate/support v5.8.9
      - Can only install one of: laravel/framework[6.x-dev, v5.6.39].
      - Installation request for laravel/framework ^6.0 -&gt; satisfiable by laravel/framework[6.x-dev, v6.0.0, v6.0.1, v6.0.2, v6.0.3, v6.0.4, v6.1.0, v6.10.0, v6.10.1, v6.11.0, v6.12.0, v6.13.0, v6.13.1, v6.14.0, v6.15.0, v6.15.1, v6.16.0, v6.17.0, v6.17.1, v6.18.0, v6.18.1, v6.18.10, v6.18.11, v6.18.12, v6.18.13, v6.18.14, v6.18.15, v6.18.16, v6.18.17, v6.18.18, v6.18.2, v6.18.3, v6.18.4, v6.18.5, v6.18.6, v6.18.7, v6.18.8, v6.18.9, v6.2.0, v6.3.0, v6.4.0, v6.4.1, v6.5.0, v6.5.1, v6.5.2, v6.6.0, v6.6.1, v6.6.2, v6.7.0, v6.8.0, v6.9.0].
  </code></pre>
  
  <p>My composer.json file is set up as so:</p>
  
  <pre><code>{
      "name": "laravel/laravel",
      "description": "The Laravel Framework.",
      "keywords": ["framework", "laravel"],
      "license": "MIT",
      "type": "project",
      "require": {
          "php": "^7.2.28",
          "adldap2/adldap2": "^8.1",
          "adldap2/adldap2-laravel": "^4.0",
          "barryvdh/laravel-dompdf": "^0.8.3",
          "fideloper/proxy": "^4.0",
          "laravel/framework": "^6.0",
          "laravel/tinker": "^1.0",
          "maatwebsite/excel": "^3.1",
          "phpoffice/phpspreadsheet": "^1.5"
      },
      "require-dev": {
          "filp/whoops": "^2.0",
          "fzaninotto/faker": "^1.4",
          "mockery/mockery": "^1.0",
          "nunomaduro/collision": "^2.0",
          "phpunit/phpunit": "^7.0"
      },
      "autoload": {
          "classmap": [
              "database/seeds",
              "database/factories"
          ],
          "psr-4": {
              "App\\": "app/"
          },
          "files": [
            "app/Helpers/helpers.php"
          ]
      },
      "autoload-dev": {
          "psr-4": {
              "Tests\\": "tests/"
          }
      },
      "extra": {
          "laravel": {
              "dont-discover": [
              ]
          }
      },
      "scripts": {
          "post-root-package-install": [
              "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
          ],
          "post-create-project-cmd": [
              "@php artisan key:generate"
          ],
          "post-autoload-dump": [
              "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
              "@php artisan package:discover"
          ]
      },
      "config": {
          "preferred-install": "dist",
          "sort-packages": true,
          "optimize-autoloader": true
      },
      "minimum-stability": "dev",
      "prefer-stable": true
  }
  </code></pre>
  
  <p>I'm at a loss of what's causing this to fail, is there a section I'm leaving out of the .json file or improperly listing my requirements? </p>