diff --git a/app/app/Models/Project.php b/app/app/Models/Project.php
index fa48b41e..a5de4e22 100644
--- a/app/app/Models/Project.php
+++ b/app/app/Models/Project.php
@@ -40,6 +40,7 @@ class Project extends Model
         'tag',
         'type',
         'is_active',
+        'paused_at',
         'daily_limit_target',
         'effective_daily_limit_today',
         'effective_limit_calculated_at',
@@ -69,6 +70,7 @@ class Project extends Model
     {
         return [
             'is_active' => 'boolean',
+            'paused_at' => 'datetime',
             'daily_limit_target' => 'integer',
             'effective_daily_limit_today' => 'integer',
             'region_mask' => 'integer',
diff --git a/app/tests/Unit/Models/ProjectPausedAtTest.php b/app/tests/Unit/Models/ProjectPausedAtTest.php
new file mode 100644
index 00000000..accaaba4
--- /dev/null
+++ b/app/tests/Unit/Models/ProjectPausedAtTest.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Models;
+
+use App\Models\Project;
+use Tests\TestCase;
+
+/**
+ * Гарантирует, что колонка `paused_at` mass-assignable и cast'ится в datetime.
+ *
+ * Связано: SupplierSnapshotGuard (docs/superpowers/plans/2026-05-26-supplier-snapshot-guard.md).
+ */
+class ProjectPausedAtTest extends TestCase
+{
+    public function test_paused_at_is_in_fillable(): void
+    {
+        $fillable = (new Project)->getFillable();
+        $this->assertContains('paused_at', $fillable);
+    }
+
+    public function test_paused_at_is_cast_to_datetime(): void
+    {
+        $casts = (new Project)->getCasts();
+        $this->assertArrayHasKey('paused_at', $casts);
+        $this->assertSame('datetime', $casts['paused_at']);
+    }
+}