diff --git a/config/asseco-attachments.php b/config/asseco-attachments.php
index b8279cf..b531360 100644
--- a/config/asseco-attachments.php
+++ b/config/asseco-attachments.php
@@ -19,7 +19,7 @@
         /**
          * UUIDs as primary keys.
          */
-        'uuid'       => false,
+        'uuid' => false,
 
         /**
          * Timestamp types.
@@ -32,11 +32,11 @@
          * Should the package run the migrations. Set to false if you're publishing
          * and changing default migrations.
          */
-        'run'        => true,
+        'run' => true,
     ],
 
     'routes' => [
-        'prefix'     => 'api',
+        'prefix' => 'api',
         'middleware' => ['api'],
     ],
 ];
diff --git a/migrations/2024_01_12_195732_add_default_to_filing_purposes_table.php b/migrations/2024_01_12_195732_add_default_to_filing_purposes_table.php
new file mode 100644
index 0000000..48c568d
--- /dev/null
+++ b/migrations/2024_01_12_195732_add_default_to_filing_purposes_table.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddDefaultToFilingPurposesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up(): void
+    {
+        Schema::table('filing_purposes', function (Blueprint $table) {
+            $table->boolean('default')->default(false);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down(): void
+    {
+        Schema::table('filing_purposes', function (Blueprint $table) {
+            $table->dropColumn('default');
+        });
+    }
+}
diff --git a/routes/api.php b/routes/api.php
index 08836ca..52716a0 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -18,7 +18,7 @@
 Route::prefix(config('asseco-attachments.routes.prefix'))
     ->middleware(config('asseco-attachments.routes.middleware'))
     ->group(function () {
-        Route::apiResource('attachments', AttachmentController::class)->except(['update']);
+        Route::apiResource('attachments', AttachmentController::class);
 
         Route::get('attachments/{attachment}/download', [AttachmentController::class, 'download'])->name('attachments.download');
 
diff --git a/src/App/Http/Controllers/AttachmentController.php b/src/App/Http/Controllers/AttachmentController.php
index f009487..7b46a82 100644
--- a/src/App/Http/Controllers/AttachmentController.php
+++ b/src/App/Http/Controllers/AttachmentController.php
@@ -59,6 +59,20 @@ public function show(Attachment $attachment): JsonResponse
         return response()->json($attachment);
     }
 
+    /**
+     * Update the specified resource.
+     *
+     * @param  Attachment  $attachment
+     * @param  AttachmentRequest  $request
+     * @return JsonResponse
+     */
+    public function update(Attachment $attachment, AttachmentRequest $request): JsonResponse
+    {
+        $attachment->update($request->validated());
+
+        return response()->json($attachment->refresh());
+    }
+
     /**
      * Remove the specified resource from storage.
      *
diff --git a/src/App/Http/Controllers/FilingPurposeController.php b/src/App/Http/Controllers/FilingPurposeController.php
index 209b04f..9c058a3 100644
--- a/src/App/Http/Controllers/FilingPurposeController.php
+++ b/src/App/Http/Controllers/FilingPurposeController.php
@@ -42,7 +42,14 @@ public function index(FilingPurposeIndexRequest $request): JsonResponse
      */
     public function store(FilingPurposeRequest $request): JsonResponse
     {
-        $filingPurpose = $this->filingPurpose::query()->create($request->validated());
+        $validated = $request->validated();
+
+        if ($validated['default']) {
+            $this->filingPurpose::query()
+                ->where('default', true)
+                ->update(['default' => false]);
+        }
+        $filingPurpose = $this->filingPurpose::query()->create($validated);
 
         return response()->json($filingPurpose);
     }
@@ -67,7 +74,14 @@ public function show(FilingPurpose $filingPurpose): JsonResponse
      */
     public function update(FilingPurpose $filingPurpose, FilingPurposeRequest $request): JsonResponse
     {
-        $filingPurpose->update($request->validated());
+        $validated = $request->validated();
+
+        if ($validated['default'] && !$filingPurpose->default_purpose) {
+            $this->filingPurpose::query()
+                ->where('default', true)
+                ->update(['default' => false]);
+        }
+        $filingPurpose->update($validated);
 
         return response()->json($filingPurpose->refresh());
     }
diff --git a/src/App/Http/Requests/FilingPurposeRequest.php b/src/App/Http/Requests/FilingPurposeRequest.php
index fd20f71..f562ba3 100644
--- a/src/App/Http/Requests/FilingPurposeRequest.php
+++ b/src/App/Http/Requests/FilingPurposeRequest.php
@@ -29,6 +29,7 @@ public function rules()
             'name' => 'required|string',
             'label' => 'required|string',
             'module' => 'required|string',
+            'default' => 'required|boolean',
         ];
     }
 }
diff --git a/src/App/Models/Attachment.php b/src/App/Models/Attachment.php
index 1c17230..8387451 100644
--- a/src/App/Models/Attachment.php
+++ b/src/App/Models/Attachment.php
@@ -39,11 +39,11 @@ public static function createFrom(UploadedFile $file, $filingPurposeId = null)
         $path = $file->storeAs('attachments', date('U') . '_' . $file->getClientOriginalName());
 
         $data = [
-            'name'      => $file->getClientOriginalName(),
+            'name' => $file->getClientOriginalName(),
             'mime_type' => $file->getClientMimeType(),
-            'size'      => $file->getSize(),
-            'path'      => $path,
-            'hash'      => $fileHash,
+            'size' => $file->getSize(),
+            'path' => $path,
+            'hash' => $fileHash,
         ];
 
         if ($filingPurposeId) {
diff --git a/src/Database/Factories/AttachmentFactory.php b/src/Database/Factories/AttachmentFactory.php
index ec24827..711e172 100644
--- a/src/Database/Factories/AttachmentFactory.php
+++ b/src/Database/Factories/AttachmentFactory.php
@@ -21,11 +21,11 @@ public function modelName()
     public function definition()
     {
         return [
-            'name'       => $this->faker->word,
-            'mime_type'  => $this->faker->mimeType,
-            'size'       => $this->faker->numberBetween(10, 10000),
-            'path'       => $this->faker->url,
-            'hash'       => $this->faker->sha1,
+            'name' => $this->faker->word,
+            'mime_type' => $this->faker->mimeType,
+            'size' => $this->faker->numberBetween(10, 10000),
+            'path' => $this->faker->url,
+            'hash' => $this->faker->sha1,
             'created_at' => now(),
             'updated_at' => now(),
         ];