diff --git a/PreMailer.Net/PreMailer.Net.Tests/PreMailer.Net.Tests.csproj b/PreMailer.Net/PreMailer.Net.Tests/PreMailer.Net.Tests.csproj
index f4f372a..c5eeaab 100644
--- a/PreMailer.Net/PreMailer.Net.Tests/PreMailer.Net.Tests.csproj
+++ b/PreMailer.Net/PreMailer.Net.Tests/PreMailer.Net.Tests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="AngleSharp" Version="1.4.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1" />