diff --git a/src/Mpociot/Versionable/Version.php b/src/Mpociot/Versionable/Version.php
index bf18534..36cb40d 100644
--- a/src/Mpociot/Versionable/Version.php
+++ b/src/Mpociot/Versionable/Version.php
@@ -47,13 +47,9 @@ public function getResponsibleUserAttribute()
      */
     public function getModel()
     {
-        $modelData = is_resource($this->model_data)
-            ? stream_get_contents($this->model_data)
-            : $this->model_data;
-
         $model = new $this->versionable_type();
         $model->unguard();
-        $model->fill(unserialize($modelData));
+        $model->fill($this->modelData());
         $model->exists = true;
         $model->reguard();
         return $model;
@@ -104,4 +100,24 @@ public function diff(Version $againstVersion = null)
         return $diffArray;
     }
 
+    /**
+     * Copy attributes of a model to be saved with the version
+     * 
+     * @param Model $model
+     */
+    public function copyModelData(Model $model)
+    {
+        $this->model_data = serialize($model->attributesToArray());
+    }
+
+    /**
+     * Model attributes
+     */
+    protected function modelData()
+    {
+        $serialized = is_resource($this->model_data)
+            ? stream_get_contents($this->model_data)
+            : $this->model_data;
+        return unserialize($serialized);
+    }
 }
diff --git a/src/Mpociot/Versionable/VersionableTrait.php b/src/Mpociot/Versionable/VersionableTrait.php
index cb377ed..8ff0acd 100644
--- a/src/Mpociot/Versionable/VersionableTrait.php
+++ b/src/Mpociot/Versionable/VersionableTrait.php
@@ -175,7 +175,7 @@ protected function versionablePostSave()
             $version->versionable_id   = $this->getKey();
             $version->versionable_type = get_class($this);
             $version->user_id          = $this->getAuthUserId();
-            $version->model_data       = serialize($this->getAttributes());
+            $version->copyModelData($this);
 
             if (!empty( $this->reason )) {
                 $version->reason = $this->reason;
diff --git a/tests/VersionableTest.php b/tests/VersionableTest.php
index 6160b57..073a0a1 100644
--- a/tests/VersionableTest.php
+++ b/tests/VersionableTest.php
@@ -289,6 +289,15 @@ public function testGetVersionModel()
 
     }
 
+    public function testGetVersionModelWithJsonField()
+    {
+        $model = new ModelWithJsonField();
+        $model->json_field = ["foo" => "bar"];
+        $model->save();
+
+        $this->assertEquals(["foo" => "bar"], $model->getVersionModel(1)->json_field);
+    }
+
     public function testUseReasonAttribute()
     {
         // Create 3 versions
@@ -547,4 +556,11 @@ class ModelWithDynamicVersion extends Model
     use VersionableTrait ;
     protected $versionClass = DynamicVersionModel::class ;
 }
+class ModelWithJsonField extends Model
+{
+    const TABLENAME = 'table_with_json_field';
+    public $table = self::TABLENAME ;
+    use VersionableTrait ;
+    protected $casts = ['json_field' => 'array'];
+}
 
diff --git a/tests/VersionableTestCase.php b/tests/VersionableTestCase.php
index c09e36b..52c4cbd 100644
--- a/tests/VersionableTestCase.php
+++ b/tests/VersionableTestCase.php
@@ -65,5 +65,11 @@ public function migrateUsersTable()
             $table->index('versionable_id');
             $table->timestamps();
         });
+
+        $this->app['db']->connection()->getSchemaBuilder()->create(ModelWithJsonField::TABLENAME, function ($table) {
+            $table->increments('id');
+            $table->json('json_field');
+            $table->timestamps();
+        });
     }
 }
\ No newline at end of file