diff --git a/DD.Persistence.Client/DD.Persistence.Client.csproj b/DD.Persistence.Client/DD.Persistence.Client.csproj
index 5d60611..2395482 100644
--- a/DD.Persistence.Client/DD.Persistence.Client.csproj
+++ b/DD.Persistence.Client/DD.Persistence.Client.csproj
@@ -52,7 +52,6 @@
     <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="8.3.0" />
     <PackageReference Include="Refit" Version="8.0.0" />
     <PackageReference Include="Refit.HttpClientFactory" Version="8.0.0" />
-    <PackageReference Include="RestSharp" Version="112.1.0" />
     <PackageReference Include="System.Configuration.ConfigurationManager" Version="9.0.0" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.3.0" />
   </ItemGroup>
diff --git a/DD.Persistence.Client/Helpers/ApiTokenHelper.cs b/DD.Persistence.Client/Helpers/ApiTokenHelper.cs
index 9e62110..85fa428 100644
--- a/DD.Persistence.Client/Helpers/ApiTokenHelper.cs
+++ b/DD.Persistence.Client/Helpers/ApiTokenHelper.cs
@@ -1,16 +1,25 @@
+using DD.Persistence.Models.Configurations;
 using Microsoft.Extensions.Configuration;
 using Microsoft.IdentityModel.Tokens;
-using DD.Persistence.Models.Configurations;
-using RestSharp;
 using System.IdentityModel.Tokens.Jwt;
 using System.Net.Http.Headers;
 using System.Security.Claims;
 using System.Text.Json;
 
 namespace DD.Persistence.Client.Helpers;
+
+/// <summary>
+/// Класс, позволяющий генерировать api-token
+/// </summary>
 public static class ApiTokenHelper
 {
-    public static void Authorize(this HttpClient httpClient, IConfiguration configuration)
+    /// <summary>
+    /// Метод авториации
+    /// </summary>
+    /// <param name="httpClient"></param>
+    /// <param name="configuration"></param>
+    /// <returns></returns>
+    public static async Task Authorize(this HttpClient httpClient, IConfiguration configuration)
     {
         var authUser = configuration
             .GetSection(nameof(AuthUser))
@@ -21,29 +30,29 @@ public static class ApiTokenHelper
         var keycloakGetTokenUrl = configuration.GetSection("KeycloakGetTokenUrl").Get<string>() ?? string.Empty;
 
         var jwtToken = needUseKeyCloak
-            ? authUser.CreateKeyCloakJwtToken(keycloakGetTokenUrl)
+            ? await authUser.CreateKeyCloakJwtToken(keycloakGetTokenUrl)
             : authUser.CreateDefaultJwtToken();
 
         httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", jwtToken);
     }
 
-	public static void Authorize(this HttpClient httpClient, string jwtToken)
-	{
-		httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", jwtToken);
-	}
-
+    /// <summary>
+    /// Авторизация через собственный jwt-токен
+    /// </summary>
+    /// <param name="authUser"></param>
+    /// <returns></returns>
 	private static string CreateDefaultJwtToken(this AuthUser authUser)
-	{
-		var nameIdetifier = Guid.NewGuid().ToString();
-		var claims = new List<Claim>()
-		{
-			new(ClaimTypes.NameIdentifier, nameIdetifier),
-			new("client_id", authUser.ClientId),
-			new("username", authUser.Username),
-			new("password", authUser.Password),
-			new("grant_type", authUser.GrantType),
-			new(ClaimTypes.NameIdentifier.ToString(), Guid.NewGuid().ToString())
-		};
+    {
+        var nameIdetifier = Guid.NewGuid().ToString();
+        var claims = new List<Claim>()
+        {
+            new(ClaimTypes.NameIdentifier, nameIdetifier),
+            new("client_id", authUser.ClientId),
+            new("username", authUser.Username),
+            new("password", authUser.Password),
+            new("grant_type", authUser.GrantType),
+            new(ClaimTypes.NameIdentifier.ToString(), Guid.NewGuid().ToString())
+        };
 
         var tokenDescriptor = new SecurityTokenDescriptor
         {
@@ -58,23 +67,31 @@ public static class ApiTokenHelper
         return tokenHandler.WriteToken(token);
     }
 
-    private static string CreateKeyCloakJwtToken(this AuthUser authUser, string keycloakGetTokenUrl)
+    /// <summary>
+    /// Авторизация через jwt-токен keycloak
+    /// </summary>
+    /// <param name="authUser"></param>
+    /// <param name="keycloakGetTokenUrl"></param>
+    /// <returns></returns>
+    private static async Task<string> CreateKeyCloakJwtToken(this AuthUser authUser, string keycloakGetTokenUrl)
     {
-        var restClient = new RestClient();
+        var sharedClient = new HttpClient();
+        var parameters = new Dictionary<string, string> {
+            { "username", authUser.Username },
+            { "password", authUser.Password },
+            { "client_id", authUser.ClientId },
+            { "grant_type", authUser.GrantType },
+        };
+        var encodedContent = new FormUrlEncodedContent(parameters);
 
-        var request = new RestRequest(keycloakGetTokenUrl, Method.Post);
-        request.AddParameter("username", authUser.Username);
-        request.AddParameter("password", authUser.Password);
-        request.AddParameter("client_id", authUser.ClientId);
-        request.AddParameter("grant_type", authUser.GrantType);
+        using HttpResponseMessage response = await sharedClient.PostAsync(keycloakGetTokenUrl, encodedContent);
 
-        var keycloakResponse = restClient.Post(request);
-        if (keycloakResponse.IsSuccessful && !String.IsNullOrEmpty(keycloakResponse.Content))
+        if (response.IsSuccessStatusCode == true)
         {
-            var token = JsonSerializer.Deserialize<JwtToken>(keycloakResponse.Content)!;
+            var data = await response.Content.ReadAsStreamAsync();
+            var token = JsonSerializer.Deserialize<JwtToken>(data)!;
             return token.AccessToken;
         }
-
         return String.Empty;
     }
 }
diff --git a/DD.Persistence.IntegrationTests/TestHttpClientFactory.cs b/DD.Persistence.IntegrationTests/TestHttpClientFactory.cs
index 51b8783..4c0cd04 100644
--- a/DD.Persistence.IntegrationTests/TestHttpClientFactory.cs
+++ b/DD.Persistence.IntegrationTests/TestHttpClientFactory.cs
@@ -19,7 +19,7 @@ namespace DD.Persistence.IntegrationTests
         public HttpClient CreateClient(string name)
         {
             var client = factory.CreateClient();
-            client.Authorize(configuration);
+            client.Authorize(configuration).GetAwaiter().GetResult();
 
             return client;
         }
diff --git a/DD.Persistence.IntegrationTests/WebAppFactoryFixture.cs b/DD.Persistence.IntegrationTests/WebAppFactoryFixture.cs
index 31b4da4..435287a 100644
--- a/DD.Persistence.IntegrationTests/WebAppFactoryFixture.cs
+++ b/DD.Persistence.IntegrationTests/WebAppFactoryFixture.cs
@@ -8,7 +8,6 @@ using Microsoft.Extensions.Logging;
 using DD.Persistence.API;
 using DD.Persistence.Client;
 using DD.Persistence.Database.Model;
-using RestSharp;
 using DD.Persistence.App;
 using DD.Persistence.Client.Helpers;
 using DD.Persistence.Factories;