diff --git a/app/Actions/Fortify/CreateNewUser.php b/app/Actions/Fortify/CreateNewUser.php
index 3d26700d..32cd588e 100644
--- a/app/Actions/Fortify/CreateNewUser.php
+++ b/app/Actions/Fortify/CreateNewUser.php
@@ -82,7 +82,7 @@ class CreateNewUser implements CreatesNewUsers
         }
         $user = null;
         $organization = null;
-        DB::transaction(function () use (&$user, &$organization, $input, $timezone, $startOfWeek, $currency) {
+        DB::transaction(function () use (&$user, &$organization, $input, $timezone, $startOfWeek, $currency): void {
             $user = User::create([
                 'name' => $input['name'],
                 'email' => $input['email'],
diff --git a/app/Actions/Jetstream/AddOrganizationMember.php b/app/Actions/Jetstream/AddOrganizationMember.php
index 57e77ab7..508900f3 100644
--- a/app/Actions/Jetstream/AddOrganizationMember.php
+++ b/app/Actions/Jetstream/AddOrganizationMember.php
@@ -38,7 +38,7 @@ class AddOrganizationMember implements AddsTeamMembers
 
         AddingTeamMember::dispatch($organization, $newOrganizationMember);
 
-        DB::transaction(function () use ($organization, $newOrganizationMember, $role) {
+        DB::transaction(function () use ($organization, $newOrganizationMember, $role): void {
             $organization->users()->attach(
                 $newOrganizationMember, ['role' => $role]
             );
@@ -93,7 +93,7 @@ class AddOrganizationMember implements AddsTeamMembers
      */
     protected function ensureUserIsNotAlreadyOnTeam(Organization $team, string $email): Closure
     {
-        return function ($validator) use ($team, $email) {
+        return function ($validator) use ($team, $email): void {
             $validator->errors()->addIf(
                 $team->hasRealUserWithEmail($email),
                 'email',
diff --git a/app/Console/Commands/TimeEntry/TimeEntrySendStillRunningMailsCommand.php b/app/Console/Commands/TimeEntry/TimeEntrySendStillRunningMailsCommand.php
index 6171da62..3d15283d 100644
--- a/app/Console/Commands/TimeEntry/TimeEntrySendStillRunningMailsCommand.php
+++ b/app/Console/Commands/TimeEntry/TimeEntrySendStillRunningMailsCommand.php
@@ -54,7 +54,7 @@ class TimeEntrySendStillRunningMailsCommand extends Command
                 $query->where('is_placeholder', '=', false);
             })
             ->orderBy('created_at', 'asc')
-            ->chunk(500, function (Collection $timeEntries) use ($dryRun, &$sentMails) {
+            ->chunk(500, function (Collection $timeEntries) use ($dryRun, &$sentMails): void {
                 /** @var Collection<int, TimeEntry> $timeEntries */
                 foreach ($timeEntries as $timeEntry) {
                     $user = $timeEntry->user;
diff --git a/app/Exceptions/Handler.php b/app/Exceptions/Handler.php
index 2bdf8c0e..b20f9475 100644
--- a/app/Exceptions/Handler.php
+++ b/app/Exceptions/Handler.php
@@ -27,7 +27,7 @@ class Handler extends ExceptionHandler
      */
     public function register(): void
     {
-        $this->reportable(function (Throwable $e) {
+        $this->reportable(function (Throwable $e): void {
             //
         });
     }
diff --git a/app/Filament/Resources/OrganizationResource.php b/app/Filament/Resources/OrganizationResource.php
index 87cba60b..4ce80391 100644
--- a/app/Filament/Resources/OrganizationResource.php
+++ b/app/Filament/Resources/OrganizationResource.php
@@ -122,7 +122,7 @@ class OrganizationResource extends Resource
                                 ->persistent()
                                 ->send();
 
-                            return response()->streamDownload(function () use ($file) {
+                            return response()->streamDownload(function () use ($file): void {
                                 echo Storage::disk(config('filesystems.private'))->get($file);
                             }, 'export.zip');
                         } catch (\Exception $exception) {
@@ -137,7 +137,7 @@ class OrganizationResource extends Resource
                     }),
                 Action::make('Import')
                     ->icon('heroicon-o-inbox-arrow-down')
-                    ->action(function (Organization $record, array $data) {
+                    ->action(function (Organization $record, array $data): void {
                         try {
                             $file = Storage::disk(config('filament.default_filesystem_disk'))->get($data['file']);
                             if ($file === null) {
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 3ec0f8d6..35eb3958 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -81,10 +81,10 @@ class AppServiceProvider extends ServiceProvider
         });
 
         // Scramble
-        Scramble::extendOpenApi(function (OpenApi $openApi) {
+        Scramble::extendOpenApi(function (OpenApi $openApi): void {
             $openApi->secure(
                 SecurityScheme::oauth2()
-                    ->flow('authorizationCode', function (OAuthFlow $flow) {
+                    ->flow('authorizationCode', function (OAuthFlow $flow): void {
                         $flow
                             ->authorizationUrl('https://solidtime.test/oauth/authorize');
                     })
diff --git a/app/Providers/RouteServiceProvider.php b/app/Providers/RouteServiceProvider.php
index f3314af8..b14b30c0 100644
--- a/app/Providers/RouteServiceProvider.php
+++ b/app/Providers/RouteServiceProvider.php
@@ -37,9 +37,9 @@ class RouteServiceProvider extends ServiceProvider
                 : Limit::perMinute(60)->by($request->ip());
         });
 
-        $this->routes(function () {
+        $this->routes(function (): void {
             Route::middleware('health-check')
-                ->group(function () {
+                ->group(function (): void {
                     Route::get('health-check/up', [HealthCheckController::class, 'up']);
                     Route::get('health-check/debug', [HealthCheckController::class, 'debug']);
                 });
diff --git a/app/Service/BillableRateService.php b/app/Service/BillableRateService.php
index 9074f24c..a665e458 100644
--- a/app/Service/BillableRateService.php
+++ b/app/Service/BillableRateService.php
@@ -28,9 +28,9 @@ class BillableRateService
             ->where('billable', '=', true)
             ->where('organization_id', '=', $project->organization_id)
             ->whereBelongsTo($project, 'project')
-            ->whereDoesntHave('member', function (Builder $query) use ($project) {
+            ->whereDoesntHave('member', function (Builder $query) use ($project): void {
                 /** @var Builder<Member> $query */
-                $query->whereHas('projectMembers', function (Builder $query) use ($project) {
+                $query->whereHas('projectMembers', function (Builder $query) use ($project): void {
                     /** @var Builder<ProjectMember> $query */
                     $query->whereBelongsTo($project, 'project')
                         ->whereNotNull('billable_rate');
@@ -62,7 +62,7 @@ class BillableRateService
         TimeEntry::query()
             ->where('billable', '=', true)
             ->where('organization_id', '=', $organization->getKey())
-            ->whereDoesntHave('member', function (Builder $builder) {
+            ->whereDoesntHave('member', function (Builder $builder): void {
                 /** @var Builder<Member> $builder */
                 $builder->whereNotNull('billable_rate');
             })
diff --git a/app/Service/DeletionService.php b/app/Service/DeletionService.php
index 023a3ea2..3e066b28 100644
--- a/app/Service/DeletionService.php
+++ b/app/Service/DeletionService.php
@@ -35,7 +35,7 @@ class DeletionService
     public function deleteOrganization(Organization $organization, bool $inTransaction = true, ?User $ignoreUser = null): void
     {
         if ($inTransaction) {
-            DB::transaction(function () use ($organization) {
+            DB::transaction(function () use ($organization): void {
                 $this->deleteOrganization($organization, false);
             });
 
@@ -123,7 +123,7 @@ class DeletionService
     public function deleteUser(User $user, bool $inTransaction = true): void
     {
         if ($inTransaction) {
-            DB::transaction(function () use ($user) {
+            DB::transaction(function () use ($user): void {
                 $this->deleteUser($user, false);
             });
 
diff --git a/app/Service/Import/ImportService.php b/app/Service/Import/ImportService.php
index c13f3cd0..02a0502f 100644
--- a/app/Service/Import/ImportService.php
+++ b/app/Service/Import/ImportService.php
@@ -31,7 +31,7 @@ class ImportService
         $lock = Cache::lock('import:'.$organization->getKey(), config('octane.max_execution_time', 60) + 1);
 
         if ($lock->get()) {
-            DB::transaction(function () use (&$importer, &$data, &$timezone) {
+            DB::transaction(function () use (&$importer, &$data, &$timezone): void {
                 $importer->importData($data, $timezone);
             });
             $lock->release();
diff --git a/app/Service/Import/Importers/DefaultImporter.php b/app/Service/Import/Importers/DefaultImporter.php
index c16e43c6..f525abe1 100644
--- a/app/Service/Import/Importers/DefaultImporter.php
+++ b/app/Service/Import/Importers/DefaultImporter.php
@@ -113,7 +113,7 @@ abstract class DefaultImporter implements ImporterContract
                 'nullable',
                 'integer',
             ],
-        ], beforeSave: function (Project $project) {
+        ], beforeSave: function (Project $project): void {
             if ($project->billable_rate === 0) {
                 $project->billable_rate = null;
             }
@@ -126,7 +126,7 @@ abstract class DefaultImporter implements ImporterContract
                 'nullable',
                 'integer',
             ],
-        ], beforeSave: function (ProjectMember $projectMember) {
+        ], beforeSave: function (ProjectMember $projectMember): void {
             if ($projectMember->billable_rate === 0) {
                 $projectMember->billable_rate = null;
             }
diff --git a/database/factories/MemberFactory.php b/database/factories/MemberFactory.php
index 9aa7a0bf..93dce2bf 100644
--- a/database/factories/MemberFactory.php
+++ b/database/factories/MemberFactory.php
@@ -85,7 +85,7 @@ class MemberFactory extends Factory
 
     public function attachToOrganization(Organization $organization, array $pivot = []): static
     {
-        return $this->afterCreating(function (User $user) use ($organization, $pivot) {
+        return $this->afterCreating(function (User $user) use ($organization, $pivot): void {
             $user->organizations()->attach($organization, $pivot);
         });
     }
diff --git a/database/factories/UserFactory.php b/database/factories/UserFactory.php
index b29e595c..a3e0a598 100644
--- a/database/factories/UserFactory.php
+++ b/database/factories/UserFactory.php
@@ -82,7 +82,7 @@ class UserFactory extends Factory
 
     public function attachToOrganization(Organization $organization, array $pivot = []): static
     {
-        return $this->afterCreating(function (User $user) use ($organization, $pivot) {
+        return $this->afterCreating(function (User $user) use ($organization, $pivot): void {
             $user->organizations()->attach($organization, $pivot);
         });
     }
diff --git a/database/migrations/2014_10_12_000000_create_users_table.php b/database/migrations/2014_10_12_000000_create_users_table.php
index b9cd5898..421047a8 100644
--- a/database/migrations/2014_10_12_000000_create_users_table.php
+++ b/database/migrations/2014_10_12_000000_create_users_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('users', function (Blueprint $table) {
+        Schema::create('users', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->string('name');
             $table->string('email');
diff --git a/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php b/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php
index 28c19a29..6885179f 100644
--- a/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php
+++ b/database/migrations/2014_10_12_100000_create_password_reset_tokens_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('password_reset_tokens', function (Blueprint $table) {
+        Schema::create('password_reset_tokens', function (Blueprint $table): void {
             $table->string('email')->primary();
             $table->string('token');
             $table->timestamp('created_at')->nullable();
diff --git a/database/migrations/2014_10_12_200000_add_two_factor_columns_to_users_table.php b/database/migrations/2014_10_12_200000_add_two_factor_columns_to_users_table.php
index 4d35ad9f..2dea3022 100644
--- a/database/migrations/2014_10_12_200000_add_two_factor_columns_to_users_table.php
+++ b/database/migrations/2014_10_12_200000_add_two_factor_columns_to_users_table.php
@@ -14,7 +14,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::table('users', function (Blueprint $table) {
+        Schema::table('users', function (Blueprint $table): void {
             $table->text('two_factor_secret')
                 ->after('password')
                 ->nullable();
@@ -36,7 +36,7 @@ return new class extends Migration
      */
     public function down(): void
     {
-        Schema::table('users', function (Blueprint $table) {
+        Schema::table('users', function (Blueprint $table): void {
             $table->dropColumn(array_merge([
                 'two_factor_secret',
                 'two_factor_recovery_codes',
diff --git a/database/migrations/2016_06_01_000001_create_oauth_auth_codes_table.php b/database/migrations/2016_06_01_000001_create_oauth_auth_codes_table.php
index 63bcc555..d66b9789 100644
--- a/database/migrations/2016_06_01_000001_create_oauth_auth_codes_table.php
+++ b/database/migrations/2016_06_01_000001_create_oauth_auth_codes_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('oauth_auth_codes', function (Blueprint $table) {
+        Schema::create('oauth_auth_codes', function (Blueprint $table): void {
             $table->string('id', 100)->primary();
             $table->foreignUuid('user_id')->index();
             $table->uuid('client_id');
diff --git a/database/migrations/2016_06_01_000002_create_oauth_access_tokens_table.php b/database/migrations/2016_06_01_000002_create_oauth_access_tokens_table.php
index ee8827f3..4df397b1 100644
--- a/database/migrations/2016_06_01_000002_create_oauth_access_tokens_table.php
+++ b/database/migrations/2016_06_01_000002_create_oauth_access_tokens_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('oauth_access_tokens', function (Blueprint $table) {
+        Schema::create('oauth_access_tokens', function (Blueprint $table): void {
             $table->string('id', 100)->primary();
             $table->foreignUuid('user_id')->nullable()->index();
             $table->uuid('client_id');
diff --git a/database/migrations/2016_06_01_000003_create_oauth_refresh_tokens_table.php b/database/migrations/2016_06_01_000003_create_oauth_refresh_tokens_table.php
index 8d07d80b..4fead714 100644
--- a/database/migrations/2016_06_01_000003_create_oauth_refresh_tokens_table.php
+++ b/database/migrations/2016_06_01_000003_create_oauth_refresh_tokens_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('oauth_refresh_tokens', function (Blueprint $table) {
+        Schema::create('oauth_refresh_tokens', function (Blueprint $table): void {
             $table->string('id', 100)->primary();
             $table->string('access_token_id', 100)->index();
             $table->boolean('revoked');
diff --git a/database/migrations/2016_06_01_000004_create_oauth_clients_table.php b/database/migrations/2016_06_01_000004_create_oauth_clients_table.php
index e430a7bf..5952f9b6 100644
--- a/database/migrations/2016_06_01_000004_create_oauth_clients_table.php
+++ b/database/migrations/2016_06_01_000004_create_oauth_clients_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('oauth_clients', function (Blueprint $table) {
+        Schema::create('oauth_clients', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->foreignUuid('user_id')->nullable()->index();
             $table->string('name');
diff --git a/database/migrations/2016_06_01_000005_create_oauth_personal_access_clients_table.php b/database/migrations/2016_06_01_000005_create_oauth_personal_access_clients_table.php
index 3695b3c5..c3177fa8 100644
--- a/database/migrations/2016_06_01_000005_create_oauth_personal_access_clients_table.php
+++ b/database/migrations/2016_06_01_000005_create_oauth_personal_access_clients_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('oauth_personal_access_clients', function (Blueprint $table) {
+        Schema::create('oauth_personal_access_clients', function (Blueprint $table): void {
             $table->bigIncrements('id');
             $table->uuid('client_id');
             $table->timestamps();
diff --git a/database/migrations/2018_08_08_100000_create_telescope_entries_table.php b/database/migrations/2018_08_08_100000_create_telescope_entries_table.php
index c1c2e1f8..17407149 100644
--- a/database/migrations/2018_08_08_100000_create_telescope_entries_table.php
+++ b/database/migrations/2018_08_08_100000_create_telescope_entries_table.php
@@ -26,7 +26,7 @@ return new class extends Migration
         }
         $schema = Schema::connection($this->getConnection());
 
-        $schema->create('telescope_entries', function (Blueprint $table) {
+        $schema->create('telescope_entries', function (Blueprint $table): void {
             $table->bigIncrements('sequence');
             $table->uuid('uuid');
             $table->uuid('batch_id');
@@ -43,7 +43,7 @@ return new class extends Migration
             $table->index(['type', 'should_display_on_index']);
         });
 
-        $schema->create('telescope_entries_tags', function (Blueprint $table) {
+        $schema->create('telescope_entries_tags', function (Blueprint $table): void {
             $table->uuid('entry_uuid');
             $table->string('tag');
 
@@ -56,7 +56,7 @@ return new class extends Migration
                 ->onDelete('cascade');
         });
 
-        $schema->create('telescope_monitoring', function (Blueprint $table) {
+        $schema->create('telescope_monitoring', function (Blueprint $table): void {
             $table->string('tag')->primary();
         });
     }
diff --git a/database/migrations/2019_08_19_000000_create_failed_jobs_table.php b/database/migrations/2019_08_19_000000_create_failed_jobs_table.php
index 9a0e45ad..30c47f60 100644
--- a/database/migrations/2019_08_19_000000_create_failed_jobs_table.php
+++ b/database/migrations/2019_08_19_000000_create_failed_jobs_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('failed_jobs', function (Blueprint $table) {
+        Schema::create('failed_jobs', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->uuid('uuid')->unique();
             $table->text('connection');
diff --git a/database/migrations/2019_12_14_000001_create_personal_access_tokens_table.php b/database/migrations/2019_12_14_000001_create_personal_access_tokens_table.php
index c49f60b7..93a76820 100644
--- a/database/migrations/2019_12_14_000001_create_personal_access_tokens_table.php
+++ b/database/migrations/2019_12_14_000001_create_personal_access_tokens_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('personal_access_tokens', function (Blueprint $table) {
+        Schema::create('personal_access_tokens', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->morphs('tokenable');
             $table->string('name');
diff --git a/database/migrations/2020_05_21_100000_create_organizations_table.php b/database/migrations/2020_05_21_100000_create_organizations_table.php
index 50008804..dfe814bb 100644
--- a/database/migrations/2020_05_21_100000_create_organizations_table.php
+++ b/database/migrations/2020_05_21_100000_create_organizations_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('organizations', function (Blueprint $table) {
+        Schema::create('organizations', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->foreignUuid('user_id')->index();
             $table->string('name');
diff --git a/database/migrations/2020_05_21_200000_create_organization_user_table.php b/database/migrations/2020_05_21_200000_create_organization_user_table.php
index 30f47bc2..e9f3b31d 100644
--- a/database/migrations/2020_05_21_200000_create_organization_user_table.php
+++ b/database/migrations/2020_05_21_200000_create_organization_user_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('organization_user', function (Blueprint $table) {
+        Schema::create('organization_user', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->foreignUuid('organization_id');
             $table->foreignUuid('user_id');
diff --git a/database/migrations/2020_05_21_300000_create_organization_invitations_table.php b/database/migrations/2020_05_21_300000_create_organization_invitations_table.php
index 1538296e..0ae93b0c 100644
--- a/database/migrations/2020_05_21_300000_create_organization_invitations_table.php
+++ b/database/migrations/2020_05_21_300000_create_organization_invitations_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('organization_invitations', function (Blueprint $table) {
+        Schema::create('organization_invitations', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->foreignUuid('organization_id')
                 ->constrained()
diff --git a/database/migrations/2024_01_16_161030_create_sessions_table.php b/database/migrations/2024_01_16_161030_create_sessions_table.php
index 8ca2d0cb..bb3aa1e0 100644
--- a/database/migrations/2024_01_16_161030_create_sessions_table.php
+++ b/database/migrations/2024_01_16_161030_create_sessions_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('sessions', function (Blueprint $table) {
+        Schema::create('sessions', function (Blueprint $table): void {
             $table->string('id')->primary();
             $table->foreignUuid('user_id')->nullable()->index();
             $table->string('ip_address', 45)->nullable();
diff --git a/database/migrations/2024_01_20_110218_create_clients_table.php b/database/migrations/2024_01_20_110218_create_clients_table.php
index 463c7e5d..7f028642 100644
--- a/database/migrations/2024_01_20_110218_create_clients_table.php
+++ b/database/migrations/2024_01_20_110218_create_clients_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('clients', function (Blueprint $table) {
+        Schema::create('clients', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->string('name', 255);
             $table->uuid('organization_id');
diff --git a/database/migrations/2024_01_20_110439_create_projects_table.php b/database/migrations/2024_01_20_110439_create_projects_table.php
index f2ab8b1e..1fc08f03 100644
--- a/database/migrations/2024_01_20_110439_create_projects_table.php
+++ b/database/migrations/2024_01_20_110439_create_projects_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('projects', function (Blueprint $table) {
+        Schema::create('projects', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->string('name', 255);
             $table->string('color', 16);
diff --git a/database/migrations/2024_01_20_110444_create_tasks_table.php b/database/migrations/2024_01_20_110444_create_tasks_table.php
index 4a0a4848..97326a4f 100644
--- a/database/migrations/2024_01_20_110444_create_tasks_table.php
+++ b/database/migrations/2024_01_20_110444_create_tasks_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('tasks', function (Blueprint $table) {
+        Schema::create('tasks', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->string('name', 500);
             $table->uuid('project_id');
diff --git a/database/migrations/2024_01_20_110452_create_tags_table.php b/database/migrations/2024_01_20_110452_create_tags_table.php
index 96c8b0bc..9e559483 100644
--- a/database/migrations/2024_01_20_110452_create_tags_table.php
+++ b/database/migrations/2024_01_20_110452_create_tags_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('tags', function (Blueprint $table) {
+        Schema::create('tags', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->string('name', 255);
             $table->uuid('organization_id');
diff --git a/database/migrations/2024_01_20_110837_create_time_entries_table.php b/database/migrations/2024_01_20_110837_create_time_entries_table.php
index e471038e..147857a4 100644
--- a/database/migrations/2024_01_20_110837_create_time_entries_table.php
+++ b/database/migrations/2024_01_20_110837_create_time_entries_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('time_entries', function (Blueprint $table) {
+        Schema::create('time_entries', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->string('description', 500);
             $table->dateTime('start');
diff --git a/database/migrations/2024_03_26_171253_create_project_members_table.php b/database/migrations/2024_03_26_171253_create_project_members_table.php
index e54a9c62..6c7c457b 100644
--- a/database/migrations/2024_03_26_171253_create_project_members_table.php
+++ b/database/migrations/2024_03_26_171253_create_project_members_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('project_members', function (Blueprint $table) {
+        Schema::create('project_members', function (Blueprint $table): void {
             $table->uuid('id')->primary();
             $table->integer('billable_rate')->unsigned()->nullable();
             $table->uuid('project_id');
diff --git a/database/migrations/2024_04_11_150130_create_jobs_table.php b/database/migrations/2024_04_11_150130_create_jobs_table.php
index 53c22929..de36d116 100644
--- a/database/migrations/2024_04_11_150130_create_jobs_table.php
+++ b/database/migrations/2024_04_11_150130_create_jobs_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('jobs', function (Blueprint $table) {
+        Schema::create('jobs', function (Blueprint $table): void {
             $table->bigIncrements('id');
             $table->string('queue')->index();
             $table->longText('payload');
diff --git a/database/migrations/2024_04_12_095010_create_cache_table.php b/database/migrations/2024_04_12_095010_create_cache_table.php
index 960e12bf..3b7f6a15 100644
--- a/database/migrations/2024_04_12_095010_create_cache_table.php
+++ b/database/migrations/2024_04_12_095010_create_cache_table.php
@@ -13,13 +13,13 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('cache', function (Blueprint $table) {
+        Schema::create('cache', function (Blueprint $table): void {
             $table->string('key')->primary();
             $table->mediumText('value');
             $table->integer('expiration');
         });
 
-        Schema::create('cache_locks', function (Blueprint $table) {
+        Schema::create('cache_locks', function (Blueprint $table): void {
             $table->string('key')->primary();
             $table->string('owner');
             $table->integer('expiration');
diff --git a/database/migrations/2024_05_22_151226_add_client_id_to_time_entries_table.php b/database/migrations/2024_05_22_151226_add_client_id_to_time_entries_table.php
index db65130f..094dc680 100644
--- a/database/migrations/2024_05_22_151226_add_client_id_to_time_entries_table.php
+++ b/database/migrations/2024_05_22_151226_add_client_id_to_time_entries_table.php
@@ -14,7 +14,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->foreignUuid('client_id')
                 ->nullable()
                 ->constrained('clients')
@@ -35,7 +35,7 @@ return new class extends Migration
      */
     public function down(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->dropForeign(['client_id']);
             $table->dropColumn('client_id');
         });
diff --git a/database/migrations/2024_05_30_175801_add_is_billable_column_to_projects_table.php b/database/migrations/2024_05_30_175801_add_is_billable_column_to_projects_table.php
index 334d364e..b9db2681 100644
--- a/database/migrations/2024_05_30_175801_add_is_billable_column_to_projects_table.php
+++ b/database/migrations/2024_05_30_175801_add_is_billable_column_to_projects_table.php
@@ -14,7 +14,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::table('projects', function (Blueprint $table) {
+        Schema::table('projects', function (Blueprint $table): void {
             $table->boolean('is_billable')->default(false);
         });
         DB::statement('
@@ -22,7 +22,7 @@ return new class extends Migration
             set is_billable = true
             where projects.billable_rate is not null and projects.billable_rate > 0
         ');
-        Schema::table('projects', function (Blueprint $table) {
+        Schema::table('projects', function (Blueprint $table): void {
             $table->boolean('is_billable')->default(null)->change();
         });
     }
@@ -32,7 +32,7 @@ return new class extends Migration
      */
     public function down(): void
     {
-        Schema::table('projects', function (Blueprint $table) {
+        Schema::table('projects', function (Blueprint $table): void {
             $table->dropColumn('is_billable');
         });
     }
diff --git a/database/migrations/2024_05_30_175825_add_is_imported_column_to_time_entries_table.php b/database/migrations/2024_05_30_175825_add_is_imported_column_to_time_entries_table.php
index 2ce29d80..511a61f4 100644
--- a/database/migrations/2024_05_30_175825_add_is_imported_column_to_time_entries_table.php
+++ b/database/migrations/2024_05_30_175825_add_is_imported_column_to_time_entries_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->boolean('is_imported')->default(false);
         });
     }
@@ -23,7 +23,7 @@ return new class extends Migration
      */
     public function down(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->dropColumn('is_imported');
         });
     }
diff --git a/database/migrations/2024_06_07_113443_change_member_id_foreign_keys_to_restrict_on_delete.php b/database/migrations/2024_06_07_113443_change_member_id_foreign_keys_to_restrict_on_delete.php
index 8b2af38f..0db454d7 100644
--- a/database/migrations/2024_06_07_113443_change_member_id_foreign_keys_to_restrict_on_delete.php
+++ b/database/migrations/2024_06_07_113443_change_member_id_foreign_keys_to_restrict_on_delete.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->dropForeign(['member_id']);
             $table->foreign('member_id')
                 ->references('id')
@@ -27,7 +27,7 @@ return new class extends Migration
                 ->restrictOnDelete()
                 ->cascadeOnUpdate();
         });
-        Schema::table('project_members', function (Blueprint $table) {
+        Schema::table('project_members', function (Blueprint $table): void {
             $table->dropForeign(['member_id']);
             $table->foreign('member_id')
                 ->references('id')
@@ -35,7 +35,7 @@ return new class extends Migration
                 ->restrictOnDelete()
                 ->cascadeOnUpdate();
         });
-        Schema::table('organization_invitations', function (Blueprint $table) {
+        Schema::table('organization_invitations', function (Blueprint $table): void {
             $table->dropForeign(['organization_id']);
             $table->foreign('organization_id')
                 ->references('id')
@@ -50,7 +50,7 @@ return new class extends Migration
      */
     public function down(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->dropForeign(['member_id']);
             $table->foreign('member_id')
                 ->references('id')
@@ -64,7 +64,7 @@ return new class extends Migration
                 ->cascadeOnDelete()
                 ->cascadeOnUpdate();
         });
-        Schema::table('project_members', function (Blueprint $table) {
+        Schema::table('project_members', function (Blueprint $table): void {
             $table->dropForeign(['member_id']);
             $table->foreign('member_id')
                 ->references('id')
@@ -72,7 +72,7 @@ return new class extends Migration
                 ->cascadeOnDelete()
                 ->cascadeOnUpdate();
         });
-        Schema::table('organization_invitations', function (Blueprint $table) {
+        Schema::table('organization_invitations', function (Blueprint $table): void {
             $table->dropForeign(['organization_id']);
             $table->foreign('organization_id')
                 ->references('id')
diff --git a/database/migrations/2024_07_18_080906_add_still_active_email_sent_at_to_time_entries_table.php b/database/migrations/2024_07_18_080906_add_still_active_email_sent_at_to_time_entries_table.php
index a2eafdb8..c96e7554 100644
--- a/database/migrations/2024_07_18_080906_add_still_active_email_sent_at_to_time_entries_table.php
+++ b/database/migrations/2024_07_18_080906_add_still_active_email_sent_at_to_time_entries_table.php
@@ -13,7 +13,7 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->dateTime('still_active_email_sent_at')->nullable();
         });
     }
@@ -23,7 +23,7 @@ return new class extends Migration
      */
     public function down(): void
     {
-        Schema::table('time_entries', function (Blueprint $table) {
+        Schema::table('time_entries', function (Blueprint $table): void {
             $table->dropColumn('still_active_email_sent_at');
         });
     }
diff --git a/database/migrations/2024_09_02_094105_create_audits_table.php b/database/migrations/2024_09_02_094105_create_audits_table.php
index a3363ad0..c8550764 100644
--- a/database/migrations/2024_09_02_094105_create_audits_table.php
+++ b/database/migrations/2024_09_02_094105_create_audits_table.php
@@ -16,7 +16,7 @@ class CreateAuditsTable extends Migration
         $connection = config('audit.drivers.database.connection', config('database.default'));
         $table = config('audit.drivers.database.table', 'audits');
 
-        Schema::connection($connection)->create($table, function (Blueprint $table) {
+        Schema::connection($connection)->create($table, function (Blueprint $table): void {
 
             $morphPrefix = config('audit.user.morph_prefix', 'user');
 
diff --git a/pint.json b/pint.json
index e908d080..68b8fc90 100644
--- a/pint.json
+++ b/pint.json
@@ -4,6 +4,7 @@
         "declare_strict_types": true,
         "strict_comparison": true,
         "strict_param": true,
-        "no_unused_imports": true
+        "no_unused_imports": true,
+        "void_return": true
     }
 }
diff --git a/routes/api.php b/routes/api.php
index 2cb70dd5..6d8f6673 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -33,15 +33,15 @@ use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 Route::middleware([
     'auth:api',
     'verified',
-])->prefix('v1')->name('v1.')->group(static function () {
+])->prefix('v1')->name('v1.')->group(static function (): void {
     // Organization routes
-    Route::name('organizations.')->group(static function () {
+    Route::name('organizations.')->group(static function (): void {
         Route::get('/organizations/{organization}', [OrganizationController::class, 'show'])->name('show');
         Route::put('/organizations/{organization}', [OrganizationController::class, 'update'])->name('update')->middleware('check-organization-blocked');
     });
 
     // Member routes
-    Route::name('members.')->group(static function () {
+    Route::name('members.')->group(static function (): void {
         Route::get('/organizations/{organization}/members', [MemberController::class, 'index'])->name('index');
         Route::put('/organizations/{organization}/members/{member}', [MemberController::class, 'update'])->name('update');
         Route::delete('/organizations/{organization}/members/{member}', [MemberController::class, 'destroy'])->name('destroy');
@@ -50,17 +50,17 @@ Route::middleware([
     });
 
     // User routes
-    Route::name('users.')->group(static function () {
+    Route::name('users.')->group(static function (): void {
         Route::get('/users/me', [UserController::class, 'me'])->name('me');
     });
 
     // User Member routes
-    Route::name('users.memberships.')->group(static function () {
+    Route::name('users.memberships.')->group(static function (): void {
         Route::get('/users/me/memberships', [UserMembershipController::class, 'myMemberships'])->name('my-memberships');
     });
 
     // Invitation routes
-    Route::name('invitations.')->group(static function () {
+    Route::name('invitations.')->group(static function (): void {
         Route::get('/organizations/{organization}/invitations', [InvitationController::class, 'index'])->name('index');
         Route::post('/organizations/{organization}/invitations', [InvitationController::class, 'store'])->name('store')->middleware('check-organization-blocked');
         Route::post('/organizations/{organization}/invitations/{invitation}/resend', [InvitationController::class, 'resend'])->name('resend')->middleware('check-organization-blocked');
@@ -68,7 +68,7 @@ Route::middleware([
     });
 
     // Project routes
-    Route::name('projects.')->group(static function () {
+    Route::name('projects.')->group(static function (): void {
         Route::get('/organizations/{organization}/projects', [ProjectController::class, 'index'])->name('index');
         Route::get('/organizations/{organization}/projects/{project}', [ProjectController::class, 'show'])->name('show');
         Route::post('/organizations/{organization}/projects', [ProjectController::class, 'store'])->name('store')->middleware('check-organization-blocked');
@@ -77,7 +77,7 @@ Route::middleware([
     });
 
     // Project member routes
-    Route::name('project-members.')->group(static function () {
+    Route::name('project-members.')->group(static function (): void {
         Route::get('/organizations/{organization}/projects/{project}/project-members', [ProjectMemberController::class, 'index'])->name('index');
         Route::post('/organizations/{organization}/projects/{project}/project-members', [ProjectMemberController::class, 'store'])->name('store')->middleware('check-organization-blocked');
         Route::put('/organizations/{organization}/project-members/{projectMember}', [ProjectMemberController::class, 'update'])->name('update')->middleware('check-organization-blocked');
@@ -85,7 +85,7 @@ Route::middleware([
     });
 
     // Time entry routes
-    Route::name('time-entries.')->group(static function () {
+    Route::name('time-entries.')->group(static function (): void {
         Route::get('/organizations/{organization}/time-entries', [TimeEntryController::class, 'index'])->name('index');
         Route::get('/organizations/{organization}/time-entries/aggregate', [TimeEntryController::class, 'aggregate'])->name('aggregate');
         Route::post('/organizations/{organization}/time-entries', [TimeEntryController::class, 'store'])->name('store')->middleware('check-organization-blocked');
@@ -94,12 +94,12 @@ Route::middleware([
         Route::delete('/organizations/{organization}/time-entries/{timeEntry}', [TimeEntryController::class, 'destroy'])->name('destroy');
     });
 
-    Route::name('users.time-entries.')->group(static function () {
+    Route::name('users.time-entries.')->group(static function (): void {
         Route::get('/users/me/time-entries/active', [UserTimeEntryController::class, 'myActive'])->name('my-active');
     });
 
     // Tag routes
-    Route::name('tags.')->group(static function () {
+    Route::name('tags.')->group(static function (): void {
         Route::get('/organizations/{organization}/tags', [TagController::class, 'index'])->name('index');
         Route::post('/organizations/{organization}/tags', [TagController::class, 'store'])->name('store')->middleware('check-organization-blocked');
         Route::put('/organizations/{organization}/tags/{tag}', [TagController::class, 'update'])->name('update')->middleware('check-organization-blocked');
@@ -107,7 +107,7 @@ Route::middleware([
     });
 
     // Client routes
-    Route::name('clients.')->group(static function () {
+    Route::name('clients.')->group(static function (): void {
         Route::get('/organizations/{organization}/clients', [ClientController::class, 'index'])->name('index');
         Route::post('/organizations/{organization}/clients', [ClientController::class, 'store'])->name('store')->middleware('check-organization-blocked');
         Route::put('/organizations/{organization}/clients/{client}', [ClientController::class, 'update'])->name('update')->middleware('check-organization-blocked');
@@ -115,7 +115,7 @@ Route::middleware([
     });
 
     // Task routes
-    Route::name('tasks.')->group(static function () {
+    Route::name('tasks.')->group(static function (): void {
         Route::get('/organizations/{organization}/tasks', [TaskController::class, 'index'])->name('index');
         Route::post('/organizations/{organization}/tasks', [TaskController::class, 'store'])->name('store')->middleware('check-organization-blocked');
         Route::put('/organizations/{organization}/tasks/{task}', [TaskController::class, 'update'])->name('update')->middleware('check-organization-blocked');
@@ -123,13 +123,13 @@ Route::middleware([
     });
 
     // Import routes
-    Route::name('import.')->group(static function () {
+    Route::name('import.')->group(static function (): void {
         Route::get('/organizations/{organization}/importers', [ImportController::class, 'index'])->name('index');
         Route::post('/organizations/{organization}/import', [ImportController::class, 'import'])->name('import')->middleware('check-organization-blocked');
     });
 
     // Export routes
-    Route::name('export.')->prefix('/organizations/{organization}')->group(static function () {
+    Route::name('export.')->prefix('/organizations/{organization}')->group(static function (): void {
         Route::post('/export', [ExportController::class, 'export'])->name('export');
     });
 });
diff --git a/routes/web.php b/routes/web.php
index a7618c83..76e3d6c0 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -25,7 +25,7 @@ Route::middleware([
     'auth:web',
     config('jetstream.auth_session'),
     'verified',
-])->group(function () {
+])->group(function (): void {
     Route::get('/dashboard', [DashboardController::class, 'dashboard'])->name('dashboard');
 
     Route::get('/time', function () {
diff --git a/tests/Feature/RegistrationTest.php b/tests/Feature/RegistrationTest.php
index 96c57cd5..0caff749 100644
--- a/tests/Feature/RegistrationTest.php
+++ b/tests/Feature/RegistrationTest.php
@@ -112,7 +112,7 @@ class RegistrationTest extends TestCase
     public function test_new_users_can_register_and_uses_ip_lookup_service_to_get_information_about_currency_and_start_of_week(): void
     {
         // Arrange
-        $this->mock(IpLookupServiceContract::class, function ($mock) {
+        $this->mock(IpLookupServiceContract::class, function ($mock): void {
             $mock->shouldReceive('lookup')->andReturn(new IpLookupResponseDto(
                 'America/New_York',
                 Weekday::Sunday,
@@ -143,7 +143,7 @@ class RegistrationTest extends TestCase
     public function test_new_users_can_register_and_uses_ip_lookup_service_to_get_information_about_timezone_if_client_did_not_send_one(): void
     {
         // Arrange
-        $this->mock(IpLookupServiceContract::class, function ($mock) {
+        $this->mock(IpLookupServiceContract::class, function ($mock): void {
             $mock->shouldReceive('lookup')->andReturn(new IpLookupResponseDto(
                 'America/New_York',
                 Weekday::Sunday,
@@ -174,7 +174,7 @@ class RegistrationTest extends TestCase
     public function test_new_users_can_register_and_uses_ip_lookup_service_to_get_information_about_timezone_if_client_sends_invalid_one(): void
     {
         // Arrange
-        $this->mock(IpLookupServiceContract::class, function ($mock) {
+        $this->mock(IpLookupServiceContract::class, function ($mock): void {
             $mock->shouldReceive('lookup')->andReturn(new IpLookupResponseDto(
                 'America/New_York',
                 Weekday::Sunday,
@@ -205,7 +205,7 @@ class RegistrationTest extends TestCase
     public function test_new_users_can_register_and_legacy_timezone_from_client_is_mapped_to_new_timezone(): void
     {
         // Arrange
-        $this->mock(IpLookupServiceContract::class, function ($mock) {
+        $this->mock(IpLookupServiceContract::class, function ($mock): void {
             $mock->shouldReceive('lookup')->andReturn(new IpLookupResponseDto(
                 'America/New_York',
                 Weekday::Sunday,
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 6fdb3a85..6e459af0 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -25,7 +25,7 @@ abstract class TestCase extends BaseTestCase
         parent::setUp();
         Mail::fake();
         LogFake::bind();
-        $this->mock(BillingContract::class, function (MockInterface $mock) {
+        $this->mock(BillingContract::class, function (MockInterface $mock): void {
             $mock->shouldReceive('hasSubscription')->andReturn(false);
             $mock->shouldReceive('hasTrial')->andReturn(false);
             $mock->shouldReceive('getTrialUntil')->andReturn(null);
diff --git a/tests/Unit/Endpoint/Api/V1/ImportEndpointTest.php b/tests/Unit/Endpoint/Api/V1/ImportEndpointTest.php
index b78cac24..a2beda61 100644
--- a/tests/Unit/Endpoint/Api/V1/ImportEndpointTest.php
+++ b/tests/Unit/Endpoint/Api/V1/ImportEndpointTest.php
@@ -16,7 +16,7 @@ use PHPUnit\Framework\Attributes\UsesClass;
 #[UsesClass(ImportController::class)]
 class ImportEndpointTest extends ApiEndpointTestAbstract
 {
-    public function test_index_fails_if_user_does_not_have_permission()
+    public function test_index_fails_if_user_does_not_have_permission(): void
     {
         // Arrange
         $data = $this->createUserWithPermission();
@@ -30,7 +30,7 @@ class ImportEndpointTest extends ApiEndpointTestAbstract
         $response->assertForbidden();
     }
 
-    public function test_index_returns_importers_if_user_has_permission()
+    public function test_index_returns_importers_if_user_has_permission(): void
     {
         // Arrange
         $data = $this->createUserWithPermission([
@@ -58,7 +58,7 @@ class ImportEndpointTest extends ApiEndpointTestAbstract
         $this->assertSame(__('importer.toggl_time_entries.description'), $toggleTimeEntries['description']);
     }
 
-    public function test_import_fails_if_user_does_not_have_permission()
+    public function test_import_fails_if_user_does_not_have_permission(): void
     {
         // Arrange
         $data = $this->createUserWithPermission();
diff --git a/tests/Unit/Endpoint/Api/V1/MemberEndpointTest.php b/tests/Unit/Endpoint/Api/V1/MemberEndpointTest.php
index f4c1eebc..8f826117 100644
--- a/tests/Unit/Endpoint/Api/V1/MemberEndpointTest.php
+++ b/tests/Unit/Endpoint/Api/V1/MemberEndpointTest.php
@@ -118,7 +118,7 @@ class MemberEndpointTest extends ApiEndpointTestAbstract
         $data = $this->createUserWithPermission([
             'members:update',
         ]);
-        $this->mock(BillableRateService::class, function (MockInterface $mock) use ($data) {
+        $this->mock(BillableRateService::class, function (MockInterface $mock) use ($data): void {
             $mock->shouldReceive('updateTimeEntriesBillableRateForMember')
                 ->once()
                 ->withArgs(fn (Member $memberArg) => $memberArg->is($data->member) && $memberArg->billable_rate === 10001);
diff --git a/tests/Unit/Endpoint/Api/V1/OrganizationEndpointTest.php b/tests/Unit/Endpoint/Api/V1/OrganizationEndpointTest.php
index 8cd282ee..50981278 100644
--- a/tests/Unit/Endpoint/Api/V1/OrganizationEndpointTest.php
+++ b/tests/Unit/Endpoint/Api/V1/OrganizationEndpointTest.php
@@ -131,7 +131,7 @@ class OrganizationEndpointTest extends ApiEndpointTestAbstract
         ]);
         $billableRate = 111;
         $organizationFake = Organization::factory()->billableRate($billableRate)->make();
-        $this->mock(BillableRateService::class, function (MockInterface $mock) use ($data, $billableRate) {
+        $this->mock(BillableRateService::class, function (MockInterface $mock) use ($data, $billableRate): void {
             $mock->shouldReceive('updateTimeEntriesBillableRateForOrganization')
                 ->once()
                 ->withArgs(fn (Organization $organization) => $organization->is($data->organization) && $organization->billable_rate === $billableRate);
diff --git a/tests/Unit/Middleware/CheckOrganizationBlockedMiddlewareTest.php b/tests/Unit/Middleware/CheckOrganizationBlockedMiddlewareTest.php
index 64635222..71b1d348 100644
--- a/tests/Unit/Middleware/CheckOrganizationBlockedMiddlewareTest.php
+++ b/tests/Unit/Middleware/CheckOrganizationBlockedMiddlewareTest.php
@@ -42,7 +42,7 @@ class CheckOrganizationBlockedMiddlewareTest extends MiddlewareTestAbstract
         // Arrange
         $user = $this->createUserWithPermission();
         $this->createTestRoute();
-        $this->mock(BillingContract::class, function (MockInterface $mock) {
+        $this->mock(BillingContract::class, function (MockInterface $mock): void {
             $mock->shouldReceive('isBlocked')->andReturn(true)->once();
         });
         Passport::actingAs($user->user);
@@ -60,7 +60,7 @@ class CheckOrganizationBlockedMiddlewareTest extends MiddlewareTestAbstract
         // Arrange
         $user = $this->createUserWithPermission();
         $this->createTestRoute();
-        $this->mock(BillingContract::class, function (MockInterface $mock) {
+        $this->mock(BillingContract::class, function (MockInterface $mock): void {
             $mock->shouldReceive('isBlocked')->never();
         });
         Passport::actingAs($user->user);
@@ -77,7 +77,7 @@ class CheckOrganizationBlockedMiddlewareTest extends MiddlewareTestAbstract
         // Arrange
         $user = $this->createUserWithPermission();
         $route = $this->createTestRouteNoModelBinding();
-        $this->mock(BillingContract::class, function (MockInterface $mock) {
+        $this->mock(BillingContract::class, function (MockInterface $mock): void {
             $mock->shouldReceive('isBlocked')->never();
         });
         Passport::actingAs($user->user);
@@ -94,7 +94,7 @@ class CheckOrganizationBlockedMiddlewareTest extends MiddlewareTestAbstract
         // Arrange
         $user = $this->createUserWithPermission();
         $this->createTestRoute();
-        $this->mock(BillingContract::class, function (MockInterface $mock) {
+        $this->mock(BillingContract::class, function (MockInterface $mock): void {
             $mock->shouldReceive('isBlocked')->andReturn(false)->once();
         });
         Passport::actingAs($user->user);