diff --git a/Framework/BaseEmailTest/BaseEmailTest.csproj b/Framework/BaseEmailTest/BaseEmailTest.csproj
index e0ff6436..7d7e50ab 100644
--- a/Framework/BaseEmailTest/BaseEmailTest.csproj
+++ b/Framework/BaseEmailTest/BaseEmailTest.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
 		<VersionPrefix>9.0.0</VersionPrefix>
@@ -47,7 +47,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="MailKit" Version="3.4.1" />
+		<PackageReference Include="MailKit" Version="4.2.0" />
 		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1">
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>