diff --git a/routes/api.php b/routes/api.php
index dec06ba36..fa01dfe90 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -1,6 +1,7 @@
 <?php
 
 use Binaryk\LaravelRestify\Http\Controllers\GlobalSearchController;
+use Binaryk\LaravelRestify\Http\Controllers\RepositoryAttachController;
 use Binaryk\LaravelRestify\Http\Controllers\RepositoryDestroyController;
 use Binaryk\LaravelRestify\Http\Controllers\RepositoryFilterController;
 use Binaryk\LaravelRestify\Http\Controllers\RepositoryIndexController;
@@ -22,3 +23,6 @@
 Route::patch('/{repository}/{repositoryId}', '\\'.RepositoryUpdateController::class);
 Route::put('/{repository}/{repositoryId}', '\\'.RepositoryUpdateController::class);
 Route::delete('/{repository}/{repositoryId}', '\\'.RepositoryDestroyController::class);
+
+// Attach related repository id
+Route::post('/{repository}/{repositoryId}/attach/{relatedRepository}', '\\'.RepositoryAttachController::class);
diff --git a/src/Http/Controllers/RepositoryAttachController.php b/src/Http/Controllers/RepositoryAttachController.php
new file mode 100644
index 000000000..41e701a1d
--- /dev/null
+++ b/src/Http/Controllers/RepositoryAttachController.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace Binaryk\LaravelRestify\Http\Controllers;
+
+use Binaryk\LaravelRestify\Http\Requests\RepositoryAttachRequest;
+use Binaryk\LaravelRestify\Http\Requests\RestifyRequest;
+use DateTime;
+use Illuminate\Support\Arr;
+
+class RepositoryAttachController extends RepositoryController
+{
+    public function __invoke(RepositoryAttachRequest $request)
+    {
+        $model = $request->findModelOrFail();
+        $repository = $request->repository()->allowToUpdate($request);
+
+        return $repository->attach(
+            $request, $request->repositoryId,
+            collect(Arr::wrap($request->input($request->relatedRepository)))
+            ->map(fn ($relatedRepositoryId) => $this->initializePivot(
+                $request, $model->{$request->viaRelationship ?? $request->relatedRepository}(), $relatedRepositoryId
+            ))
+        );
+    }
+
+    /**
+     * Initialize a fresh pivot model for the relationship.
+     *
+     * @param RestifyRequest $request
+     * @param $relationship
+     * @return mixed
+     * @throws \Binaryk\LaravelRestify\Exceptions\Eloquent\EntityNotFoundException
+     * @throws \Binaryk\LaravelRestify\Exceptions\UnauthorizedException
+     */
+    protected function initializePivot(RestifyRequest $request, $relationship, $relatedKey)
+    {
+        $parentKey = $request->repositoryId;
+
+        $parentKeyName = $relationship->getParentKeyName();
+        $relatedKeyName = $relationship->getRelatedKeyName();
+
+        if ($parentKeyName !== $request->model()->getKeyName()) {
+            $parentKey = $request->findModelOrFail()->{$parentKeyName};
+        }
+
+        if ($relatedKeyName !== ($request->newRelatedRepository()::newModel())->getKeyName()) {
+            $relatedKey = $request->findRelatedModelOrFail()->{$relatedKeyName};
+        }
+
+        ($pivot = $relationship->newPivot())->forceFill([
+            $relationship->getForeignPivotKeyName() => $parentKey,
+            $relationship->getRelatedPivotKeyName() => $relatedKey,
+        ]);
+
+        if ($relationship->withTimestamps) {
+            $pivot->forceFill([
+                $relationship->createdAt() => new DateTime,
+                $relationship->updatedAt() => new DateTime,
+            ]);
+        }
+
+        return $pivot;
+    }
+}
diff --git a/src/Http/Requests/InteractWithRepositories.php b/src/Http/Requests/InteractWithRepositories.php
index 991f2cee9..7d2030908 100644
--- a/src/Http/Requests/InteractWithRepositories.php
+++ b/src/Http/Requests/InteractWithRepositories.php
@@ -152,6 +152,41 @@ public function findModelQuery($repositoryId = null, $uriKey = null)
         );
     }
 
+    public function findModelOrFail($id = null)
+    {
+        if ($id) {
+            return $this->findModelQuery($id)->firstOrFail();
+        }
+
+        return once(function () {
+            return $this->findModelQuery()->firstOrFail();
+        });
+    }
+
+    public function findRelatedModelOrFail()
+    {
+        return once(function () {
+            return $this->findRelatedQuery()->firstOrFail();
+        });
+    }
+
+    public function findRelatedQuery($relatedRepository = null, $relatedRepositoryId = null)
+    {
+        return $this->repository($relatedRepository ?? request('relatedRepository'))::newModel()
+            ->newQueryWithoutScopes()
+            ->whereKey($relatedRepositoryId ?? request('relatedRepositoryId'));
+    }
+
+    protected function findPivot(RestifyRequest $request, $model)
+    {
+        $pivot = $model->{$request->relatedRepository}()->getPivotAccessor();
+
+        return $model->{$request->viaRelationship}()
+            ->withoutGlobalScopes()
+            ->lockForUpdate()
+            ->findOrFail($request->relatedRepositoryId)->{$pivot};
+    }
+
     public function viaParentModel()
     {
         $parent = $this->repository($this->viaRepository);
@@ -163,4 +198,21 @@ public function viaQuery()
     {
         return $this->viaParentModel()->{$this->viaRelationship}();
     }
+
+    /**
+     * Get a new instance of the "related" resource being requested.
+     *
+     * @return Repository
+     */
+    public function newRelatedRepository()
+    {
+        $resource = $this->relatedRepository();
+
+        return new $resource($resource::newModel());
+    }
+
+    public function relatedRepository()
+    {
+        return Restify::repositoryForKey($this->relatedRepository);
+    }
 }
diff --git a/src/Http/Requests/RepositoryAttachRequest.php b/src/Http/Requests/RepositoryAttachRequest.php
new file mode 100644
index 000000000..972af0822
--- /dev/null
+++ b/src/Http/Requests/RepositoryAttachRequest.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Binaryk\LaravelRestify\Http\Requests;
+
+class RepositoryAttachRequest extends RestifyRequest
+{
+}
diff --git a/src/Http/Requests/RestifyRequest.php b/src/Http/Requests/RestifyRequest.php
index 86d22e25b..d5569e14d 100644
--- a/src/Http/Requests/RestifyRequest.php
+++ b/src/Http/Requests/RestifyRequest.php
@@ -2,6 +2,7 @@
 
 namespace Binaryk\LaravelRestify\Http\Requests;
 
+use Binaryk\LaravelRestify\Restify;
 use Illuminate\Foundation\Http\FormRequest;
 use Illuminate\Support\Facades\App;
 
diff --git a/src/Repositories/Repository.php b/src/Repositories/Repository.php
index 8935d1653..da83f4911 100644
--- a/src/Repositories/Repository.php
+++ b/src/Repositories/Repository.php
@@ -574,6 +574,18 @@ public function update(RestifyRequest $request, $repositoryId)
             ->success();
     }
 
+    public function attach(RestifyRequest $request, $repositoryId, Collection $pivots)
+    {
+        DB::transaction(function () use ($request, $pivots) {
+            return $pivots->map(fn ($pivot) => $pivot->forceFill($request->except($request->relatedRepository)))
+                ->map(fn ($pivot) => $pivot->save());
+        });
+
+        return $this->response()
+            ->data($pivots)
+            ->created();
+    }
+
     public function destroy(RestifyRequest $request, $repositoryId)
     {
         $status = DB::transaction(function () {
diff --git a/tests/Controllers/RepositoryFilterControllerTest.php b/tests/Controllers/RepositoryFilterControllerTest.php
index f5c535799..b4a24c6d7 100644
--- a/tests/Controllers/RepositoryFilterControllerTest.php
+++ b/tests/Controllers/RepositoryFilterControllerTest.php
@@ -16,7 +16,6 @@ public function test_can_get_available_filters()
         $response = $this
             ->withoutExceptionHandling()
             ->getJson('restify-api/posts/filters')
-            ->dump()
             ->assertStatus(200);
 
         $this->assertCount(3, $response->json('data'));
@@ -39,7 +38,6 @@ public function test_the_boolean_filter_is_applied()
         $response = $this
             ->withoutExceptionHandling()
             ->getJson('restify-api/posts?filters='.$filters)
-            ->dump()
             ->assertStatus(200);
 
         $this->assertCount(1, $response->json('data'));
diff --git a/tests/Controllers/RepositoryPivotControllerTest.php b/tests/Controllers/RepositoryPivotControllerTest.php
new file mode 100644
index 000000000..997065ad0
--- /dev/null
+++ b/tests/Controllers/RepositoryPivotControllerTest.php
@@ -0,0 +1,66 @@
+<?php
+
+namespace Binaryk\LaravelRestify\Tests\Controllers;
+
+use Binaryk\LaravelRestify\Tests\Fixtures\Company\Company;
+use Binaryk\LaravelRestify\Tests\IntegrationTest;
+
+class RepositoryPivotControllerTest extends IntegrationTest
+{
+    public function test_attach_a_user_to_a_company()
+    {
+        $user = $this->mockUsers(2)->first();
+        $company = factory(Company::class)->create();
+
+        $response = $this->postJson('restify-api/companies/'.$company->id.'/attach/users', [
+            'users' => $user->id,
+            'is_admin' => true,
+        ])
+            ->assertStatus(201);
+
+        $response->assertJsonFragment([
+            'company_id' => '1',
+            'user_id' => $user->id,
+            'is_admin' => true,
+        ]);
+    }
+
+    public function test_attach_multiple_users_to_a_company()
+    {
+        $user = $this->mockUsers(2)->first();
+        $company = factory(Company::class)->create();
+        $usersFromCompany = $this->getJson('/restify-api/users?viaRepository=companies&viaRepositoryId=1&viaRelationship=users');
+        $this->assertCount(0, $usersFromCompany->json('data'));
+
+        $response = $this->postJson('restify-api/companies/'.$company->id.'/attach/users', [
+            'users' => [1, 2],
+            'is_admin' => true,
+        ])
+            ->assertStatus(201);
+
+        $response->assertJsonFragment([
+            'company_id' => '1',
+            'user_id' => $user->id,
+            'is_admin' => true,
+        ]);
+
+        $usersFromCompany = $this->getJson('/restify-api/users?viaRepository=companies&viaRepositoryId=1&viaRelationship=users');
+        $this->assertCount(2, $usersFromCompany->json('data'));
+    }
+
+    public function test_after_attach_a_user_to_company_number_of_users_increased()
+    {
+        $user = $this->mockUsers()->first();
+        $company = factory(Company::class)->create();
+
+        $usersFromCompany = $this->getJson('/restify-api/users?viaRepository=companies&viaRepositoryId=1&viaRelationship=users');
+        $this->assertCount(0, $usersFromCompany->json('data'));
+
+        $this->postJson('restify-api/companies/'.$company->id.'/attach/users', [
+            'users' => $user->id,
+        ]);
+
+        $usersFromCompany = $this->getJson('/restify-api/users?viaRepository=companies&viaRepositoryId=1&viaRelationship=users');
+        $this->assertCount(1, $usersFromCompany->json('data'));
+    }
+}
diff --git a/tests/Factories/CompanyFactory.php b/tests/Factories/CompanyFactory.php
new file mode 100644
index 000000000..e0e43d8f3
--- /dev/null
+++ b/tests/Factories/CompanyFactory.php
@@ -0,0 +1,21 @@
+<?php
+
+use Binaryk\LaravelRestify\Tests\Fixtures\Company\Company;
+use Faker\Generator as Faker;
+
+/*
+|--------------------------------------------------------------------------
+| Model Factories
+|--------------------------------------------------------------------------
+|
+| This directory should contain each of the model factory definitions for
+| your application. Factories provide a convenient way to generate new
+| model instances for testing / seeding your application's database.
+|
+*/
+
+$factory->define(Company::class, function (Faker $faker) {
+    return [
+        'name' => $faker->name,
+    ];
+});
diff --git a/tests/Fixtures/Company/Company.php b/tests/Fixtures/Company/Company.php
new file mode 100644
index 000000000..d1ed1dc86
--- /dev/null
+++ b/tests/Fixtures/Company/Company.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Binaryk\LaravelRestify\Tests\Fixtures\Company;
+
+use Binaryk\LaravelRestify\Tests\Fixtures\User\User;
+use Illuminate\Database\Eloquent\Model;
+
+class Company extends Model
+{
+    protected $fillable = [
+        'id',
+        'name',
+    ];
+
+    public function users()
+    {
+        return $this->belongsToMany(User::class, 'company_user', 'company_id', 'user_id')
+            ->withPivot([
+                'is_admin',
+            ])
+            ->withTimestamps();
+    }
+}
diff --git a/tests/Fixtures/Company/CompanyRepository.php b/tests/Fixtures/Company/CompanyRepository.php
new file mode 100644
index 000000000..f6b59e693
--- /dev/null
+++ b/tests/Fixtures/Company/CompanyRepository.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Binaryk\LaravelRestify\Tests\Fixtures\Company;
+
+use Binaryk\LaravelRestify\Repositories\Repository;
+
+class CompanyRepository extends Repository
+{
+    public static $model = Company::class;
+}
diff --git a/tests/Fixtures/User/User.php b/tests/Fixtures/User/User.php
index b072ec989..7cab46a0e 100644
--- a/tests/Fixtures/User/User.php
+++ b/tests/Fixtures/User/User.php
@@ -4,6 +4,7 @@
 
 use Binaryk\LaravelRestify\Contracts\RestifySearchable;
 use Binaryk\LaravelRestify\Contracts\Sanctumable;
+use Binaryk\LaravelRestify\Tests\Fixtures\Company\Company;
 use Binaryk\LaravelRestify\Tests\Fixtures\Post\Post;
 use Binaryk\LaravelRestify\Traits\InteractWithSearch;
 use Illuminate\Contracts\Auth\MustVerifyEmail;
@@ -81,6 +82,13 @@ public function posts()
         return $this->hasMany(Post::class);
     }
 
+    public function companies()
+    {
+        return $this->belongsToMany(Company::class, 'company_user', 'user_id', 'company_id')->withPivot([
+            'is_admin',
+        ])->withTimestamps();
+    }
+
     /**
      * Set default test values.
      */
diff --git a/tests/IntegrationTest.php b/tests/IntegrationTest.php
index c61a275a9..6c083d20e 100644
--- a/tests/IntegrationTest.php
+++ b/tests/IntegrationTest.php
@@ -5,6 +5,7 @@
 use Binaryk\LaravelRestify\Exceptions\RestifyHandler;
 use Binaryk\LaravelRestify\LaravelRestifyServiceProvider;
 use Binaryk\LaravelRestify\Restify;
+use Binaryk\LaravelRestify\Tests\Fixtures\Company\CompanyRepository;
 use Binaryk\LaravelRestify\Tests\Fixtures\Post\Post;
 use Binaryk\LaravelRestify\Tests\Fixtures\Post\PostAuthorizeRepository;
 use Binaryk\LaravelRestify\Tests\Fixtures\Post\PostMergeableRepository;
@@ -178,6 +179,7 @@ public function loadRepositories()
         Restify::repositories([
             UserRepository::class,
             PostRepository::class,
+            CompanyRepository::class,
             PostMergeableRepository::class,
             PostAuthorizeRepository::class,
             PostWithUnauthorizedFieldsRepository::class,
diff --git a/tests/Migrations/2019_12_22_000005_create_Company_user__table.php b/tests/Migrations/2019_12_22_000005_create_Company_user__table.php
new file mode 100644
index 000000000..84575f583
--- /dev/null
+++ b/tests/Migrations/2019_12_22_000005_create_Company_user__table.php
@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateCompanyUserTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('company_user', function (Blueprint $table) {
+            $table->foreignId('company_id')->constrained('companies');
+            $table->foreignId('user_id')->constrained('users');
+            $table->boolean('is_admin')->default(false);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('company_user');
+    }
+}
diff --git a/tests/Migrations/2019_12_22_000005_create_companies_table.php b/tests/Migrations/2019_12_22_000005_create_companies_table.php
new file mode 100644
index 000000000..7c2c2886b
--- /dev/null
+++ b/tests/Migrations/2019_12_22_000005_create_companies_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateCompaniesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('companies', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('companies');
+    }
+}