diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 283976f..90513b3 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -6,7 +6,7 @@ jobs:
     test:
         runs-on: ubuntu-latest
         strategy:
-            fail-fast: true
+            fail-fast: false
             matrix:
                 php: [8.0]
                 laravel: [8.*]
@@ -23,9 +23,7 @@ jobs:
                 env:
                     MYSQL_ALLOW_EMPTY_PASSWORD: yes
                     MYSQL_DATABASE: laravel_schemaless_attributes
-                    MYSQL_ROOT_PASSWORD: root_password
-                    MYSQL_USER: username
-                    MYSQL_PASSWORD: password
+                    MYSQL_ROOT_PASSWORD: null
                 ports:
                     - 3306
                 options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=3
@@ -38,7 +36,7 @@ jobs:
                 uses: shivammathur/setup-php@v2
                 with:
                     php-version: ${{ matrix.php }}
-                    extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, soap, intl, gd, exif, iconv, imagick
+                    extensions: dom, curl, libxml, mbstring, zip, pcntl, pdo, sqlite, pdo_sqlite, bcmath, intl, exif, iconv
                     coverage: none
 
             -   name: Install dependencies
diff --git a/src/Casts/SchemalessAttributes.php b/src/Casts/SchemalessAttributes.php
index 162c721..8f483bc 100644
--- a/src/Casts/SchemalessAttributes.php
+++ b/src/Casts/SchemalessAttributes.php
@@ -32,6 +32,19 @@ public function get($model, $key, $value, $attributes)
      */
     public function set($model, $key, $value, $attributes)
     {
+        if ($this->isJson($value)) {
+            return $value;
+        }
+
         return json_encode($value);
     }
+
+    protected function isJson($value): bool
+    {
+        if (! is_string($value)) {
+            return false;
+        }
+
+        return  $value === json_encode(json_decode($value));
+    }
 }
diff --git a/tests/HasSchemalessAttributesTest.php b/tests/HasSchemalessAttributesTest.php
index 4791fbe..557d801 100644
--- a/tests/HasSchemalessAttributesTest.php
+++ b/tests/HasSchemalessAttributesTest.php
@@ -41,6 +41,14 @@ public function an_schemaless_attribute_can_be_set()
         $this->assertEquals('value', $this->testModel->schemaless_attributes->name);
     }
 
+    /** @test */
+    public function an_schemaless_attribute_can_be_set_from_json()
+    {
+        $this->testModel->schemaless_attributes = json_encode(['name' => 'value']);
+
+        $this->assertEquals('value', $this->testModel->schemaless_attributes->name);
+    }
+
     /** @test */
     public function it_can_determine_if_it_has_a_schemaless_attribute()
     {
@@ -245,6 +253,19 @@ public function it_can_add_and_save_schemaless_attributes_in_one_go()
         $this->assertEquals($array, $testModel->schemaless_attributes->all());
     }
 
+    /** @test */
+    public function it_can_and_save_schemaless_attributes_from_json()
+    {
+        $array = [
+            'name' => 'value',
+            'name2' => 'value2',
+        ];
+
+        $testModel = TestModel::create(['schemaless_attributes' => json_encode($array)]);
+
+        $this->assertEquals($array, $testModel->schemaless_attributes->all());
+    }
+
     /** @test */
     public function it_has_a_scope_to_get_models_with_the_given_schemaless_attributes()
     {
diff --git a/tests/docker-compose.yml b/tests/docker-compose.yml
index 1e852a6..84f6bed 100644
--- a/tests/docker-compose.yml
+++ b/tests/docker-compose.yml
@@ -4,10 +4,8 @@ services:
         restart: always
         image: mysql/mysql-server:8.0
         environment:
-            MYSQL_ROOT_PASSWORD: "root_password"
+            MYSQL_ROOT_PASSWORD: null
             MYSQL_DATABASE: "laravel_schemaless_attributes"
-            MYSQL_USER: "username"
-            MYSQL_PASSWORD: "password"
             MYSQL_ROOT_HOST: "0.0.0.0"
             MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
         ports: