diff --git a/RingCentral.Net/RestClient.cs b/RingCentral.Net/RestClient.cs
index 31d15b421..40d583007 100644
--- a/RingCentral.Net/RestClient.cs
+++ b/RingCentral.Net/RestClient.cs
@@ -49,7 +49,7 @@ public RestClient(string clientId, string clientSecret, bool production = false,
         public async Task<HttpResponseMessage> Request(HttpRequestMessage httpRequestMessage, int retriedTimes = 0,
             CancellationToken? cancellationToken = null)
         {
-            httpRequestMessage.Headers.Add("X-User-Agent", $"{appName}/{appVersion} RingCentral.Net/4.0.0-beta4");
+            httpRequestMessage.Headers.Add("X-User-Agent", $"{appName}/{appVersion} RingCentral.Net/4.0.0");
             httpRequestMessage.Headers.Authorization =
                 httpRequestMessage.RequestUri.AbsolutePath.StartsWith("/restapi/oauth/")
                     ? new AuthenticationHeaderValue("Basic",
diff --git a/RingCentral.Net/RingCentral.Net.csproj b/RingCentral.Net/RingCentral.Net.csproj
index 146d4e3c1..229507abf 100644
--- a/RingCentral.Net/RingCentral.Net.csproj
+++ b/RingCentral.Net/RingCentral.Net.csproj
@@ -3,7 +3,7 @@
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
         <PackageId>RingCentral.Net</PackageId>
-        <PackageVersion>4.0.0-beta4</PackageVersion>
+        <PackageVersion>4.0.0</PackageVersion>
         <Authors>Tyler Liu (tyler.liu@ringcentral.com)</Authors>
         <Description>RingCentral SDK for .NET</Description>
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
diff --git a/RingCentral.Tests/AuthorizationTest.cs b/RingCentral.Tests/AuthorizationTest.cs
index 89b41632c..47faff0be 100644
--- a/RingCentral.Tests/AuthorizationTest.cs
+++ b/RingCentral.Tests/AuthorizationTest.cs
@@ -133,7 +133,6 @@ await rc.Authorize(
             await rc.Revoke();
         }
 
-
         [Fact]
         public async void LoadTokenTest()
         {