diff --git a/CHANGELOG.md b/CHANGELOG.md
index e31e28c0..7c8ad878 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,10 @@
 # bitrix24-php-sdk change log
 
-## 2.0-beta.1 — 25.03.2023
+## 2.0-beta.1 — 18.02.2024
 
 ### Added
 
-* ❗️add php 8.3 support, drop 8.1 and 8.0 support
+* ❗️add php 8.3, 8.2 support, drop 8.1 and 8.0 support
 * add `Symfony\Component\Uid\Uuid` requirements
 * add contracts for bitrix24 applications based on bitrix24-php-sdk - `Bitrix24\SDK\Application\Contracts`, now
   added `Bitrix24Account`
diff --git a/Makefile b/Makefile
index ee1097e7..6e31904d 100644
--- a/Makefile
+++ b/Makefile
@@ -3,4 +3,7 @@ default:
 	@egrep -e '^\S+' ./Makefile | grep -v default | sed -r 's/://' | sed -r 's/^/ - /'
 
 phpstan:
-	vendor/bin/phpstan analyse
\ No newline at end of file
+	vendor/bin/phpstan analyse
+
+test-unit:
+	vendor/bin/phpunit --testsuite unit_tests
\ No newline at end of file
diff --git a/src/Infrastructure/HttpClient/RequestId/DefaultRequestIdGenerator.php b/src/Infrastructure/HttpClient/RequestId/DefaultRequestIdGenerator.php
index 9b49016d..84defcd0 100644
--- a/src/Infrastructure/HttpClient/RequestId/DefaultRequestIdGenerator.php
+++ b/src/Infrastructure/HttpClient/RequestId/DefaultRequestIdGenerator.php
@@ -8,9 +8,9 @@
 
 class DefaultRequestIdGenerator implements RequestIdGeneratorInterface
 {
-    private const string DEFAULT_REQUEST_ID_HEADER_FIELD_NAME = 'X-Request-ID';
-    private const string DEFAULT_QUERY_STRING_PARAMETER_NAME = 'bx24_request_id';
-    private const array KEY_NAME_VARIANTS = [
+    private const DEFAULT_REQUEST_ID_HEADER_FIELD_NAME = 'X-Request-ID';
+    private const DEFAULT_QUERY_STRING_PARAMETER_NAME = 'bx24_request_id';
+    private const KEY_NAME_VARIANTS = [
         'REQUEST_ID',
         'HTTP_X_REQUEST_ID',
         'UNIQUE_ID'
diff --git a/src/Services/CRM/Common/Result/AbstractCrmItem.php b/src/Services/CRM/Common/Result/AbstractCrmItem.php
index f7d9c321..84ffb151 100644
--- a/src/Services/CRM/Common/Result/AbstractCrmItem.php
+++ b/src/Services/CRM/Common/Result/AbstractCrmItem.php
@@ -17,7 +17,7 @@
 
 class AbstractCrmItem extends AbstractItem
 {
-    private const string CRM_USERFIELD_PREFIX = 'UF_CRM_';
+    private const CRM_USERFIELD_PREFIX = 'UF_CRM_';
 
     /**
      * @var Currency
diff --git a/src/Services/Catalog/Common/Result/AbstractCatalogItem.php b/src/Services/Catalog/Common/Result/AbstractCatalogItem.php
index 435beeb4..b1d0138a 100644
--- a/src/Services/Catalog/Common/Result/AbstractCatalogItem.php
+++ b/src/Services/Catalog/Common/Result/AbstractCatalogItem.php
@@ -13,7 +13,7 @@
 
 abstract class AbstractCatalogItem extends AbstractItem
 {
-    private const string CRM_USERFIELD_PREFIX = 'UF_CRM_';
+    private const CRM_USERFIELD_PREFIX = 'UF_CRM_';
 
     /**
      * @var Currency
diff --git a/tests/Unit/Application/ApplicationStatusTest.php b/tests/Unit/Application/ApplicationStatusTest.php
index d768b0e4..ba6214ce 100644
--- a/tests/Unit/Application/ApplicationStatusTest.php
+++ b/tests/Unit/Application/ApplicationStatusTest.php
@@ -49,7 +49,7 @@ public function testInitFromString(): void
     /**
      * @return \Generator
      */
-    public function statusDataProvider(): Generator
+    public static function statusDataProvider(): Generator
     {
         yield 'free' => [
             'F',
diff --git a/tests/Unit/Core/Credentials/ApplicationProfileTest.php b/tests/Unit/Core/Credentials/ApplicationProfileTest.php
index 17956aac..27d415f7 100644
--- a/tests/Unit/Core/Credentials/ApplicationProfileTest.php
+++ b/tests/Unit/Core/Credentials/ApplicationProfileTest.php
@@ -31,7 +31,7 @@ public function testFromArray(array $arr, ?string $expectedException): void
         $this->assertEquals($prof->getClientSecret(), $arr['BITRIX24_PHP_SDK_APPLICATION_CLIENT_SECRET']);
     }
 
-    public function arrayDataProvider(): Generator
+    public static function arrayDataProvider(): Generator
     {
         yield 'valid' => [
             [
diff --git a/tests/Unit/Core/Credentials/CredentialsTest.php b/tests/Unit/Core/Credentials/CredentialsTest.php
index 5d3ccfdb..64438eef 100644
--- a/tests/Unit/Core/Credentials/CredentialsTest.php
+++ b/tests/Unit/Core/Credentials/CredentialsTest.php
@@ -70,7 +70,7 @@ public function testDomainUrlWithProtocol(): void
      * @throws \Bitrix24\SDK\Core\Exceptions\InvalidArgumentException
      * @throws \Bitrix24\SDK\Core\Exceptions\UnknownScopeCodeException
      */
-    public function credentialsDataProviderWithDomainUrlVariants(): Generator
+    public static function credentialsDataProviderWithDomainUrlVariants(): Generator
     {
         yield 'with webhook walid domain url' => [
             Credentials::createFromWebhook(new WebhookUrl('https://bitrix24-php-sdk-playground.bitrix24.ru/rest/1/valid-webhook/')),
diff --git a/tests/Unit/Core/Response/DTO/TimeTest.php b/tests/Unit/Core/Response/DTO/TimeTest.php
index 64f597b2..99a7db9d 100644
--- a/tests/Unit/Core/Response/DTO/TimeTest.php
+++ b/tests/Unit/Core/Response/DTO/TimeTest.php
@@ -36,7 +36,7 @@ public function testInitFromResponseData(array $result): void
     /**
      * @return \Generator
      */
-    public function timingsDataProvider(): Generator
+    public static function timingsDataProvider(): Generator
     {
         yield 'without operating reset at' => [
             [
diff --git a/tests/Unit/Infrastructure/HttpClient/RequestId/DefaultRequestIdGeneratorTest.php b/tests/Unit/Infrastructure/HttpClient/RequestId/DefaultRequestIdGeneratorTest.php
index fab333b8..48b21e52 100644
--- a/tests/Unit/Infrastructure/HttpClient/RequestId/DefaultRequestIdGeneratorTest.php
+++ b/tests/Unit/Infrastructure/HttpClient/RequestId/DefaultRequestIdGeneratorTest.php
@@ -26,7 +26,7 @@ public function testExistsRequestId($requestIdKey, $requestId): void
         unset($_SERVER[$requestIdKey]);
     }
 
-    public function requestIdKeyDataProvider(): Generator
+    public static function requestIdKeyDataProvider(): Generator
     {
         yield 'REQUEST_ID' => [
             'REQUEST_ID',