diff --git a/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/AbpElasticsearchOptions.cs b/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/AbpElasticsearchOptions.cs
index 2159d89b9..03c421f20 100644
--- a/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/AbpElasticsearchOptions.cs
+++ b/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/AbpElasticsearchOptions.cs
@@ -1,8 +1,9 @@
-using Elasticsearch.Net;
-using Nest;
+using Elastic.Clients.Elasticsearch;
+using Elastic.Transport;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using static Elastic.Clients.Elasticsearch.ElasticsearchClientSettings;
 
 namespace LINGYUN.Abp.Elasticsearch
 {
@@ -15,56 +16,90 @@ namespace LINGYUN.Abp.Elasticsearch
         /// 默认：false
         /// </summary>
         public bool FieldCamelCase { get; set; }
+        /// <summary>
+        /// When set to true will disable (de)serializing directly to the request and response stream and return a byte[] copy of the raw request and response. 
+        /// Defaults to false.
+        /// </summary>
         public bool DisableDirectStreaming { get; set; }
         public string NodeUris { get; set; }
         public int ConnectionLimit { get; set; }
+        /// <summary>
+        /// `Base64ApiKey` for Elastic Cloud style encoded api keys
+        /// </summary>
+        public string? Base64ApiKey { get; set; }
+        /// <summary>
+        /// `ApiKey` for simple secret token
+        /// </summary>
+        public string? ApiKey { get; set; }
+        /// <summary>
+        /// `UserName` for basic authentication
+        /// </summary>
         public string? UserName { get; set; }
+        /// <summary>
+        /// `Password` for basic authentication
+        /// </summary>
         public string? Password { get; set; }
-        public TimeSpan ConnectionTimeout { get; set; }
-        public IConnection Connection { get; set; }
-        public ConnectionSettings.SourceSerializerFactory SerializerFactory { get; set; }
+        /// <summary>
+        /// Default: 60s
+        /// </summary>
+        public TimeSpan RequestTimeout { get; set; }
+        /// <summary>
+        /// 
+        /// </summary>
+        public IRequestInvoker RequestInvoker { get; set; }
+        public SourceSerializerFactory SerializerFactory { get; set; }
 
         public AbpElasticsearchOptions()
         {
-            ConnectionLimit = ConnectionConfiguration.DefaultConnectionLimit;
-            ConnectionTimeout = ConnectionConfiguration.DefaultTimeout;
+            ConnectionLimit = TransportConfiguration.DefaultConnectionLimit;
+            // Default: 60s
+            // See: https://www.elastic.co/docs/reference/elasticsearch/clients/dotnet/_options_on_elasticsearchclientsettings
+            RequestTimeout = TimeSpan.FromSeconds(60);
         }
 
-        internal IConnectionSettingsValues CreateConfiguration()
+        internal IElasticsearchClientSettings CreateClientSettings()
         {
-            IConnectionPool connectionPool;
+            NodePool nodePool;
             IEnumerable<Uri> nodes = NodeUris
                 .Split(new[] { ',', ';' }, StringSplitOptions.RemoveEmptyEntries)
                 .Select(uriString => new Uri(uriString));
             if (nodes.Count() == 1)
             {
-                connectionPool = new SingleNodeConnectionPool(nodes.First());
+                nodePool = new SingleNodePool(nodes.First());
             }
             else
             {
-                connectionPool = new StaticConnectionPool(nodes);
+                nodePool = new StaticNodePool(nodes);
             }
 
-            var configuration = new ConnectionSettings(
-                connectionPool,
-                Connection,
+            var clientSettings = new ElasticsearchClientSettings(
+                nodePool,
+                RequestInvoker,
                 SerializerFactory)
                 .ConnectionLimit(ConnectionLimit)
-                .RequestTimeout(ConnectionTimeout);
+                .RequestTimeout(RequestTimeout);
 
             if (!FieldCamelCase)
             {
-                configuration.DefaultFieldNameInferrer((name) => name);
+                clientSettings.DefaultFieldNameInferrer((name) => name);
             }
 
-            if (!UserName.IsNullOrWhiteSpace())
+            if (!Base64ApiKey.IsNullOrWhiteSpace())
+            {
+                clientSettings.Authentication(new Base64ApiKey(Base64ApiKey));
+            }
+            else if (!ApiKey.IsNullOrWhiteSpace())
+            {
+                clientSettings.Authentication(new ApiKey(ApiKey));
+            }
+            else if (!UserName.IsNullOrWhiteSpace() && !Password.IsNullOrWhiteSpace())
             {
-                configuration.BasicAuthentication(UserName, Password);
+                clientSettings.Authentication(new BasicAuthentication(UserName, Password));
             }
 
-            configuration.DisableDirectStreaming(DisableDirectStreaming);
+            clientSettings.DisableDirectStreaming(DisableDirectStreaming);
 
-            return configuration;
+            return clientSettings;
         }
     }
 }
diff --git a/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/ElasticsearchClientFactory.cs b/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/ElasticsearchClientFactory.cs
index dd3c122fd..1b4704080 100644
--- a/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/ElasticsearchClientFactory.cs
+++ b/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/ElasticsearchClientFactory.cs
@@ -1,5 +1,5 @@
-using Microsoft.Extensions.Options;
-using Nest;
+using Elastic.Clients.Elasticsearch;
+using Microsoft.Extensions.Options;
 using System;
 using Volo.Abp.DependencyInjection;
 
@@ -8,23 +8,23 @@ namespace LINGYUN.Abp.Elasticsearch
     public class ElasticsearchClientFactory : IElasticsearchClientFactory, ISingletonDependency
     {
         private readonly AbpElasticsearchOptions _options;
-        private readonly Lazy<IElasticClient> _lazyClient;
+        private readonly Lazy<ElasticsearchClient> _lazyClient;
 
         public ElasticsearchClientFactory(
             IOptions<AbpElasticsearchOptions> options)
         {
             _options = options.Value;
 
-            _lazyClient = new Lazy<IElasticClient>(CreateClient);
+            _lazyClient = new Lazy<ElasticsearchClient>(CreateClient);
         }
 
-        public IElasticClient Create() => _lazyClient.Value;
+        public ElasticsearchClient Create() => _lazyClient.Value;
 
-        protected virtual IElasticClient CreateClient()
+        protected virtual ElasticsearchClient CreateClient()
         {
-            var configuration = _options.CreateConfiguration();
+            var configuration = _options.CreateClientSettings();
 
-            var client = new ElasticClient(configuration);
+            var client = new ElasticsearchClient(configuration);
 
             return client;
         }
diff --git a/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/IElasticsearchClientFactory.cs b/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/IElasticsearchClientFactory.cs
index d10980019..16f4c6c9c 100644
--- a/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/IElasticsearchClientFactory.cs
+++ b/aspnet-core/framework/elasticsearch/LINGYUN.Abp.Elasticsearch/LINGYUN/Abp/Elasticsearch/IElasticsearchClientFactory.cs
@@ -1,9 +1,9 @@
-using Nest;
+using Elastic.Clients.Elasticsearch;
 
 namespace LINGYUN.Abp.Elasticsearch
 {
     public interface IElasticsearchClientFactory
     {
-        IElasticClient Create();
+        ElasticsearchClient Create();
     }
 }