diff --git a/.github/workflows/build-ci.yml b/.github/workflows/build-ci.yml
index 023def9..b79741f 100644
--- a/.github/workflows/build-ci.yml
+++ b/.github/workflows/build-ci.yml
@@ -35,19 +35,14 @@ jobs:
         strategy:
             matrix:
                 include:
-                    - { os: ubuntu-latest, php: 7.2, mongodb: 3.6, experimental: true }
-                    - { os: ubuntu-latest, php: 7.2, mongodb: '4.0', experimental: true }
-                    - { os: ubuntu-latest, php: 7.2, mongodb: 4.2, experimental: true }
-                    - { os: ubuntu-latest, php: 7.2, mongodb: 4.4, experimental: true }
-                    - { os: ubuntu-latest, php: 7.3, mongodb: 3.6, experimental: false }
-                    - { os: ubuntu-latest, php: 7.3, mongodb: '4.0', experimental: false }
-                    - { os: ubuntu-latest, php: 7.3, mongodb: 4.2, experimental: false }
-                    - { os: ubuntu-latest, php: 7.3, mongodb: 4.4, experimental: false }
-                    - { os: ubuntu-latest, php: 7.4, mongodb: 3.6, experimental: false }
-                    - { os: ubuntu-latest, php: 7.4, mongodb: '4.0', experimental: false }
-                    - { os: ubuntu-latest, php: 7.4, mongodb: 4.2, experimental: false }
-                    - { os: ubuntu-latest, php: 7.4, mongodb: 4.4, experimental: false }
+                    - { os: ubuntu-latest, php: 8.0, mongodb: '4.0', experimental: false }
+                    - { os: ubuntu-latest, php: 8.0, mongodb: 4.2, experimental: false }
                     - { os: ubuntu-latest, php: 8.0, mongodb: 4.4, experimental: false }
+                    - { os: ubuntu-latest, php: 8.0, mongodb: '5.0', experimental: false }
+                    - { os: ubuntu-latest, php: 8.1, mongodb: '4.0', experimental: false }
+                    - { os: ubuntu-latest, php: 8.1, mongodb: 4.2, experimental: false }
+                    - { os: ubuntu-latest, php: 8.1, mongodb: 4.4, experimental: false }
+                    - { os: ubuntu-latest, php: 8.1, mongodb: '5.0', experimental: false }
         services:
             mongo:
                 image: mongo:${{ matrix.mongodb }}
@@ -78,22 +73,18 @@ jobs:
                 env:
                     DEBUG: ${{secrets.DEBUG}}
             -   name: Download Composer cache dependencies from cache
-                if: (!startsWith(matrix.php, '7.2'))
                 id: composer-cache
                 run: echo "::set-output name=dir::$(composer config cache-files-dir)"
             -   name: Cache Composer dependencies
-                if: (!startsWith(matrix.php, '7.2'))
                 uses: actions/cache@v1
                 with:
                     path: ${{ steps.composer-cache.outputs.dir }}
                     key: ${{ matrix.os }}-composer-${{ hashFiles('**/composer.json') }}
                     restore-keys: ${{ matrix.os }}-composer-
             -   name: Install dependencies
-                if: (!startsWith(matrix.php, '7.2'))
                 run: |
                     composer install --no-interaction
             -   name: Run tests
-                if: (!startsWith(matrix.php, '7.2'))
                 run: |
                     ./vendor/bin/phpunit --coverage-clover coverage.xml
                 env:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a43b9ac..fe0f4dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Added
+- Compatibility with Laravel 9.x [#](https://github.com/jenssegers/laravel-mongodb/pull/) by [@divine](https://github.com/divine).
+
 ## [3.8.4] - 2021-05-27
 
 ### Fixed
diff --git a/README.md b/README.md
index 189d453..8ede587 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,7 @@ Make sure you have the MongoDB PHP driver installed. You can find installation i
 
  Laravel  | Package        | Maintained
 :---------|:---------------|:----------
+ 9.x      | 3.9.x          | :white_check_mark:
  8.x      | 3.8.x          | :white_check_mark:
  7.x      | 3.7.x          | :x:
  6.x      | 3.6.x          | :white_check_mark:
diff --git a/composer.json b/composer.json
index 5522a67..ddc7f70 100644
--- a/composer.json
+++ b/composer.json
@@ -19,17 +19,17 @@
     ],
     "license": "MIT",
     "require": {
-        "illuminate/support": "^8.0",
-        "illuminate/container": "^8.0",
-        "illuminate/database": "^8.0",
-        "illuminate/events": "^8.0",
-        "mongodb/mongodb": "^1.6"
+        "illuminate/support": "9.x-dev",
+        "illuminate/container": "9.x-dev",
+        "illuminate/database": "9.x-dev",
+        "illuminate/events": "9.x-dev",
+        "mongodb/mongodb": "^1.11"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.0",
-        "orchestra/testbench": "^6.0",
+        "phpunit/phpunit": "^9.5.8",
+        "orchestra/testbench": "7.x-dev",
         "mockery/mockery": "^1.3.1",
-        "doctrine/dbal": "^2.6"
+        "doctrine/dbal": "^2.13.3|^3.1.4"
     },
     "autoload": {
         "psr-4": {
@@ -54,5 +54,7 @@
                 "Jenssegers\\Mongodb\\MongodbQueueServiceProvider"
             ]
         }
-    }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }
diff --git a/src/Query/Builder.php b/src/Query/Builder.php
index de3265c..27f64d8 100644
--- a/src/Query/Builder.php
+++ b/src/Query/Builder.php
@@ -526,7 +526,7 @@ public function whereAll($column, array $values, $boolean = 'and', $not = false)
     /**
      * @inheritdoc
      */
-    public function whereBetween($column, array $values, $boolean = 'and', $not = false)
+    public function whereBetween($column, iterable $values, $boolean = 'and', $not = false)
     {
         $type = 'between';