diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index 151facd..260ba56 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -13,6 +13,7 @@ jobs:
         php:
           - '8.1'
           - '8.2'
+          - '8.3'
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/src/Definitions/Attribute.php b/src/Definitions/Attribute.php
index 9e634dc..1844189 100644
--- a/src/Definitions/Attribute.php
+++ b/src/Definitions/Attribute.php
@@ -873,7 +873,7 @@ final class Attribute extends BaseEnum
     public const CONTENT_PRODUCE_CODE = 'content_produce_code';
 
     /**
-     * dentifikační číslo plátce přepravy
+     * Identifikační číslo plátce přepravy
      */
     public const SHIPPER_VAT = 'shipper_vat';
 
@@ -917,6 +917,11 @@ final class Attribute extends BaseEnum
      */
     public const EU_EORI = 'eu_eori';
 
+    /**
+     * Číslo účtu odesilatele
+     */
+    public const SHIPPER_ACCOUNT_NUMBER = 'shipper_account_number';
+
     /**
      * @deprecated
      */
diff --git a/src/Definitions/Service.php b/src/Definitions/Service.php
index ff53e89..183cb57 100644
--- a/src/Definitions/Service.php
+++ b/src/Definitions/Service.php
@@ -601,6 +601,16 @@ final class Service extends BaseEnum
      */
     public const ZASILKOVNA_BG_ECONT_BOX = '19470';
 
+    /**
+     * BG Sameday HD
+     */
+    public const ZASILKOVNA_BG_SAMEDAY_HD = '26066';
+
+    /**
+     * BG Sameday Box
+     */
+    public const ZASILKOVNA_BG_SAMEDAY_BOX = '26067';
+
     /**
      * CZ Česká pošta HD
      */
@@ -1066,6 +1076,16 @@ final class Service extends BaseEnum
      */
     public const ZASILKOVNA_SI_POST_BOX = '19517';
 
+    /**
+     * SI Express One HD
+     */
+    public const ZASILKOVNA_SI_EXPRESS_ONE_HD = '25004';
+
+    /**
+     * SI Express One PP
+     */
+    public const ZASILKOVNA_SI_EXPRESS_ONE_PP = '25005';
+
     /**
      * Expresné doručenie Bratislava
      */
@@ -1207,7 +1227,7 @@ final class Service extends BaseEnum
     public const PBH_PP = '13';
 
     /**
-     * polský Inpost Kurier
+     * Polský Inpost Kurier
      */
     public const PBH_INPOST_KURIER = '14';
 
@@ -1281,6 +1301,21 @@ final class Service extends BaseEnum
      */
     public const PBH_UPS = '28';
 
+    /**
+     * Warenpost
+     */
+    public const PBH_WARENPOST = '29';
+
+    /**
+     * Chorvatská pošta
+     */
+    public const PBH_HR_POST = '30';
+
+    /**
+     * BOX NOW
+     */
+    public const PBH_BOX_NOW = '31';
+
     /**
      * Worlwide zásilky
      */
@@ -1976,6 +2011,21 @@ final class Service extends BaseEnum
      */
     public const LIFTAGO_STANDARD_22 = 'standard-20-22';
 
+    /**
+     * Liftago SLot 10-12h
+     */
+    public const LIFTAGO_SLOT_12 = 'SLOT10-12';
+
+    /**
+     * Liftago SLot 12-15h
+     */
+    public const LIFTAGO_SLOT_15 = 'SLOT12-15';
+
+    /**
+     * Liftago SLot 18-21h
+     */
+    public const LIFTAGO_SLOT_21 = 'SLOT18-21';
+
     /**
      * MPL Business parcel (Domestic)
      */
@@ -2237,6 +2287,9 @@ private static function pbh(): array
             self::PBH_ROYAL_MAIL_48,
             self::PBH_EXPRESS_ONE,
             self::PBH_UPS,
+            self::PBH_WARENPOST,
+            self::PBH_HR_POST,
+            self::PBH_BOX_NOW,
         ];
     }
 
@@ -2350,6 +2403,8 @@ private static function zasilkovna(): array
             self::ZASILKOVNA_BG_SPEEDY_PP,
             self::ZASILKOVNA_BG_SPEEDY_HD,
             self::ZASILKOVNA_BG_ECONT_BOX,
+            self::ZASILKOVNA_BG_SAMEDAY_HD,
+            self::ZASILKOVNA_BG_SAMEDAY_BOX,
             // self::ZASILKOVNA_CZ_POST_HD,
             self::ZASILKOVNA_CZ_EXPRESS_PRAHA_HD,
             // self::ZASILKOVNA_CZ_EXPRESS_BRNO_HD,
@@ -2406,8 +2461,8 @@ private static function zasilkovna(): array
             self::ZASILKOVNA_IE_ANPOST_HD,
             self::ZASILKOVNA_IE_FEDEX_HD_CONNECT_PLUS,
             self::ZASILKOVNA_IE_FEDEX_HD_PRIORITY,
-            self::ZASILKOVNA_IL_FEDEX_PRIORITY_HD,
-            self::ZASILKOVNA_IL_FEDEX_ECONOMY_HD,
+            // self::ZASILKOVNA_IL_FEDEX_PRIORITY_HD,
+            // self::ZASILKOVNA_IL_FEDEX_ECONOMY_HD,
             self::ZASILKOVNA_IT_BARTOLINI_HD,
             self::ZASILKOVNA_IT_BARTOLINI_PP,
             // self::ZASILKOVNA_IT_GLS_HD,
@@ -2449,6 +2504,8 @@ private static function zasilkovna(): array
             self::ZASILKOVNA_SI_POST_HD,
             self::ZASILKOVNA_SI_POST_PP,
             self::ZASILKOVNA_SI_POST_BOX,
+            self::ZASILKOVNA_SI_EXPRESS_ONE_HD,
+            self::ZASILKOVNA_SI_EXPRESS_ONE_PP,
             self::ZASILKOVNA_SK_EXPRESS_BRATISLAVA_HD,
             self::ZASILKOVNA_SK_COURIER_HD,
             // self::ZASILKOVNA_SK_POST_HD,
@@ -2703,14 +2760,17 @@ private static function liftago(): array
         return [
             self::LIFTAGO_EXPRESS,
             self::LIFTAGO_STANDARD,
-            self::LIFTAGO_STANDARD_8,
-            self::LIFTAGO_STANDARD_10,
-            self::LIFTAGO_STANDARD_12,
-            self::LIFTAGO_STANDARD_14,
-            self::LIFTAGO_STANDARD_16,
-            self::LIFTAGO_STANDARD_18,
-            self::LIFTAGO_STANDARD_20,
-            self::LIFTAGO_STANDARD_22,
+            // self::LIFTAGO_STANDARD_8,
+            // self::LIFTAGO_STANDARD_10,
+            // self::LIFTAGO_STANDARD_12,
+            // self::LIFTAGO_STANDARD_14,
+            // self::LIFTAGO_STANDARD_16,
+            // self::LIFTAGO_STANDARD_18,
+            // self::LIFTAGO_STANDARD_20,
+            // self::LIFTAGO_STANDARD_22,
+            self::LIFTAGO_SLOT_12,
+            self::LIFTAGO_SLOT_15,
+            self::LIFTAGO_SLOT_21,
         ];
     }
 
diff --git a/src/Model/PackageData/Package/DeliveryData.php b/src/Model/PackageData/Package/DeliveryData.php
index d4a38af..2d13d1f 100644
--- a/src/Model/PackageData/Package/DeliveryData.php
+++ b/src/Model/PackageData/Package/DeliveryData.php
@@ -243,4 +243,9 @@ public function setShipperVat(string $code): void
     {
         $this->offsetSet(Attribute::SHIPPER_VAT, $code);
     }
+
+    public function setShipperAccountNumber(string $number): void
+    {
+        $this->offsetSet(Attribute::SHIPPER_ACCOUNT_NUMBER, $number);
+    }
 }
diff --git a/tests/Integration/ChangesSupportTest.php b/tests/Integration/ChangesSupportTest.php
index abffc19..11a1f30 100644
--- a/tests/Integration/ChangesSupportTest.php
+++ b/tests/Integration/ChangesSupportTest.php
@@ -8,6 +8,7 @@
 use Inspirum\Balikobot\Definitions\Carrier;
 use Inspirum\Balikobot\Definitions\Method;
 use Inspirum\Balikobot\Definitions\Version;
+use Inspirum\Balikobot\Exception\Exception;
 use Inspirum\Balikobot\Model\Attribute\Attribute as AttributeModel;
 use Inspirum\Balikobot\Model\Method\Method as MethodModel;
 use function array_diff;
@@ -26,7 +27,7 @@ public function testLatestChangesSupport(): void
 
         $changelog = $infoService->getChangelog();
 
-        $expected = (float) '1.987';
+        $expected = (float) '1.990';
         $actual   = (float) $changelog->getLatestVersion();
 
         if ($actual > $expected) {
@@ -42,10 +43,18 @@ public function testAllAddAttributesSupport(): void
         $attributes     = [];
 
         foreach (Carrier::getAll() as $carrier) {
-            $attributes[] = array_map(
-                static fn(AttributeModel $attribute): string => $attribute->getName(),
-                $settingService->getAddAttributes($carrier)->getAttributes(),
-            );
+            try {
+                $attributes[] = array_map(
+                    static fn(AttributeModel $attribute): string => $attribute->getName(),
+                    $settingService->getAddAttributes($carrier)->getAttributes(),
+                );
+            } catch (Exception $exception) {
+                if ($exception->getStatusCode() === 503) {
+                    continue;
+                }
+
+                throw $exception;
+            }
         }
 
         $attributes          = array_unique(array_merge(...$attributes));
diff --git a/tests/Integration/Model/Branch/DefaultBranchResolverTest.php b/tests/Integration/Model/Branch/DefaultBranchResolverTest.php
index d7dbf51..8c811c3 100644
--- a/tests/Integration/Model/Branch/DefaultBranchResolverTest.php
+++ b/tests/Integration/Model/Branch/DefaultBranchResolverTest.php
@@ -8,6 +8,7 @@
 use Inspirum\Balikobot\Definitions\Country;
 use Inspirum\Balikobot\Definitions\Service;
 use Inspirum\Balikobot\Exception\BadRequestException;
+use Inspirum\Balikobot\Exception\Exception;
 use Inspirum\Balikobot\Model\Branch\BranchResolver;
 use Inspirum\Balikobot\Model\Branch\DefaultBranchResolver;
 use PHPUnit\Framework\Attributes\DataProvider;
@@ -42,7 +43,11 @@ public function testHasFullBranchesSupport(string $carrier, string $service): vo
             } else {
                 $this->assertNoException();
             }
-        } catch (BadRequestException $exception) {
+        } catch (Exception $exception) {
+            if ($exception->getStatusCode() === 503) {
+                self::markTestIncomplete(sprintf('%s/%s is unavailable', strtoupper($carrier), $service));
+            }
+
             self::assertFalse(
                 $branchResolver->hasFullBranchesSupport($carrier, $service),
                 sprintf(
@@ -90,7 +95,11 @@ public function testHasBranchCountryFilterSupport(string $carrier, string $servi
             } else {
                 self::assertTrue($shouldSupport, sprintf('%s/%s should not support branch country filter', strtoupper($carrier), $service));
             }
-        } catch (BadRequestException $exception) {
+        } catch (Exception $exception) {
+            if ($exception->getStatusCode() === 503) {
+                self::markTestIncomplete(sprintf('%s/%s is unavailable', strtoupper($carrier), $service));
+            }
+
             self::assertFalse(
                 $branchResolver->hasBranchCountryFilterSupport($carrier, $service),
                 sprintf(
@@ -136,14 +145,14 @@ public function testBranchesFilterByCountryCodes(): void
 
                     break;
                 }
-            } catch (BadRequestException $exception) {
-                if ($exception->getStatusCode() === 501) {
-                    continue;
+            } catch (Exception $exception) {
+                if ($exception->getStatusCode() === 501 || $exception->getStatusCode() === 503) {
+                    self::markTestIncomplete(sprintf('%s is unavailable', strtoupper($carrier)));
                 }
 
                 $errorMessage = $exception->getResponse()['status_message'] ?? '';
                 if (str_contains($errorMessage, 'Neznámý kód služby') === false) {
-                    $this->fail(sprintf('%s: %s', $carrier, $exception->getMessage()));
+                    $this->fail(sprintf('%s: %s', strtoupper($carrier), $exception->getMessage()));
                 }
             }
         }
diff --git a/tests/Integration/Provider/LiveServiceProviderTest.php b/tests/Integration/Provider/LiveServiceProviderTest.php
index afeb38d..5e64f6a 100644
--- a/tests/Integration/Provider/LiveServiceProviderTest.php
+++ b/tests/Integration/Provider/LiveServiceProviderTest.php
@@ -5,6 +5,7 @@
 namespace Inspirum\Balikobot\Tests\Integration;
 
 use Inspirum\Balikobot\Definitions\Service;
+use Inspirum\Balikobot\Exception\Exception;
 use Inspirum\Balikobot\Provider\LiveCarrierProvider;
 use Inspirum\Balikobot\Provider\LiveServiceProvider;
 use function sprintf;
@@ -18,7 +19,16 @@ public function testGetServices(): void
 
         foreach ($carrierProvider->getCarriers() as $carrier) {
             $expectedServices = Service::getForCarrier($carrier);
-            $services         = $serviceProvider->getServices($carrier);
+
+            try {
+                $services = $serviceProvider->getServices($carrier);
+            } catch (Exception $exception) {
+                if ($exception->getStatusCode() === 503) {
+                    continue;
+                }
+
+                throw  $exception;
+            }
 
             self::assertEqualsCanonicalizing(
                 $expectedServices,
diff --git a/tests/Unit/Model/PackageData/DefaultPackageDataTest.php b/tests/Unit/Model/PackageData/DefaultPackageDataTest.php
index 9f0ddc8..0550c3d 100644
--- a/tests/Unit/Model/PackageData/DefaultPackageDataTest.php
+++ b/tests/Unit/Model/PackageData/DefaultPackageDataTest.php
@@ -207,6 +207,7 @@ public function testPackageSetters(): void
         $package->setTransformTempFrom(5);
         $package->setTransformTempTO(60);
         $package->setShipperVat('21');
+        $package->setShipperAccountNumber('765432/0300');
         $package->setNoteInvoice('note1');
         $package->setInvoiceType('PRO_FORMA_INVOICE');
         $package->setReturnBarcode(true);
@@ -377,6 +378,7 @@ public function testPackageSetters(): void
                 Attribute::TRANSFORM_TEMP_FROM           => 5.0,
                 Attribute::TRANSFORM_TEMP_TO             => 60.0,
                 Attribute::SHIPPER_VAT                   => '21',
+                Attribute::SHIPPER_ACCOUNT_NUMBER                   => '765432/0300',
                 Attribute::NOTE_INVOICE                  => 'note1',
                 Attribute::INVOICE_TYPE                  => 'PRO_FORMA_INVOICE',
                 Attribute::RETURN_BARCODE                => 1,