diff --git a/Sakura.AspNetCore.Extensions/Sakura.AspNetCore.Authentication.ExternalCookie/Sakura.AspNetCore.Authentication.ExternalCookie.csproj b/Sakura.AspNetCore.Extensions/Sakura.AspNetCore.Authentication.ExternalCookie/Sakura.AspNetCore.Authentication.ExternalCookie.csproj
index aa00e8d..736376f 100644
--- a/Sakura.AspNetCore.Extensions/Sakura.AspNetCore.Authentication.ExternalCookie/Sakura.AspNetCore.Authentication.ExternalCookie.csproj
+++ b/Sakura.AspNetCore.Extensions/Sakura.AspNetCore.Authentication.ExternalCookie/Sakura.AspNetCore.Authentication.ExternalCookie.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <Description>This library is used to simplify the pipeline to use external cookie identity as application identity directly.</Description>
@@ -25,7 +25,7 @@
 
 
 	<ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
-		<PackageReference Include="Microsoft.AspNetCore.Identity" Version="1.0.6" />
+		<PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.1.39" />
 	</ItemGroup>
 
 	<ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.0' ">
@@ -39,11 +39,11 @@
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">
     <Reference Include="System" />
     <Reference Include="Microsoft.CSharp" />
-    <PackageReference Include="Microsoft.AspNetCore.Identity" Version="1.0.6" />
+    <PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.1.39" />
   </ItemGroup>
 
 	<ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
-		<PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.0.0" />
+		<PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.1.39" />
 	</ItemGroup>
 
 </Project>