diff --git a/app/Actions/Projects/BuildProjectBacklogPayload.php b/app/Actions/Projects/BuildProjectBacklogPayload.php
index e7b8622..bff6315 100644
--- a/app/Actions/Projects/BuildProjectBacklogPayload.php
+++ b/app/Actions/Projects/BuildProjectBacklogPayload.php
@@ -59,24 +59,10 @@ class BuildProjectBacklogPayload
             )->resolve(),
             'users' => UserResource::collection(
                 User::query()
-                    ->whereIn('id', $this->visibleUserIds($project))
+                    ->visibleToProject($project)
                     ->orderBy('name')
                     ->get(),
             )->resolve(),
         ];
     }
-
-    /**
-     * @return array<int, int>
-     */
-    private function visibleUserIds(Project $project): array
-    {
-        return User::query()
-            ->get()
-            ->filter(fn (User $candidate): bool => $this->permissionService->allows($candidate, Permission::ProjectRead, $project))
-            ->pluck('id')
-            ->map(fn (mixed $userId): int => (int) $userId)
-            ->values()
-            ->all();
-    }
 }
diff --git a/app/Actions/Projects/BuildProjectTicketDetailPayload.php b/app/Actions/Projects/BuildProjectTicketDetailPayload.php
index 56a014b..25257cb 100644
--- a/app/Actions/Projects/BuildProjectTicketDetailPayload.php
+++ b/app/Actions/Projects/BuildProjectTicketDetailPayload.php
@@ -116,24 +116,10 @@ class BuildProjectTicketDetailPayload
             'ticketTypes' => TicketTypeResource::collection($project->ticketTypes()->get())->resolve(),
             'users' => UserResource::collection(
                 User::query()
-                    ->whereIn('id', $this->visibleUserIds($project))
+                    ->visibleToProject($project)
                     ->orderBy('name')
                     ->get(),
             )->resolve(),
         ];
     }
-
-    /**
-     * @return array<int, int>
-     */
-    private function visibleUserIds(Project $project): array
-    {
-        return User::query()
-            ->get()
-            ->filter(fn (User $candidate): bool => $this->permissionService->allows($candidate, Permission::ProjectRead, $project))
-            ->pluck('id')
-            ->map(fn (mixed $userId): int => (int) $userId)
-            ->values()
-            ->all();
-    }
 }
diff --git a/app/Models/User.php b/app/Models/User.php
index ef51f81..b84a873 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -3,12 +3,14 @@
 namespace App\Models;
 
 // use Illuminate\Contracts\Auth\MustVerifyEmail;
+use App\Actions\Permissions\PermissionService;
 use Database\Factories\UserFactory;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Attributes\Hidden;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Relations\MorphMany;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
@@ -69,4 +71,17 @@ class User extends Authenticatable
     {
         return $this->hasMany(Ticket::class, 'author_user_id');
     }
+
+    public function scopeVisibleToProject(Builder $query, Project $project): Builder
+    {
+        $permissionService = app(PermissionService::class);
+
+        return $query->where(function (Builder $builder) use ($permissionService, $project): void {
+            foreach (User::query()->select('id')->cursor() as $candidate) {
+                if ($permissionService->allows($candidate, \App\Enums\Permission::ProjectRead, $project)) {
+                    $builder->orWhereKey($candidate->id);
+                }
+            }
+        });
+    }
 }