diff --git a/Tests/MQTTnet.Core.Tests/MQTTnet.Core.Tests.csproj b/Tests/MQTTnet.Core.Tests/MQTTnet.Core.Tests.csproj
index 7ba4895..802d96d 100644
--- a/Tests/MQTTnet.Core.Tests/MQTTnet.Core.Tests.csproj
+++ b/Tests/MQTTnet.Core.Tests/MQTTnet.Core.Tests.csproj
@@ -8,8 +8,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="1.1.2" />
-    <PackageReference Include="MSTest.TestAdapter" Version="1.1.18" />
-    <PackageReference Include="MSTest.TestFramework" Version="1.1.18" />
+    <PackageReference Include="MSTest.TestAdapter" Version="1.2.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="1.2.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0" />
   </ItemGroup>
 
diff --git a/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj b/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj
index 42b1630..0d7e039 100644
--- a/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj
+++ b/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj
@@ -166,7 +166,7 @@
     <NoWarn>;2008</NoWarn>
     <NoStdLib>true</NoStdLib>
     <DebugType>pdbonly</DebugType>
-    <PlatformTarget>AnyCPU</PlatformTarget>
+    <PlatformTarget>x86</PlatformTarget>
     <UseVSHostingProcess>false</UseVSHostingProcess>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
diff --git a/appveyor.yml b/appveyor.yml
index 97816dd..253e07d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,6 @@
 version: 1.0.{build}
 image: Visual Studio 2017
+configuration: Release
 before_build:
 - cmd: >-
     msbuild /t:restore
@@ -12,4 +13,4 @@ build:
   project: MQTTnet.sln
   verbosity: minimal
 test_script:
-- cmd: vstest.console /logger:Appveyor Tests/MQTTnet.Core.Tests/bin/Release/net461/MQTTnet.Core.Tests.dll
+- cmd: dotnet vstest "%APPVEYOR_BUILD_FOLDER%\Tests\MQTTnet.Core.Tests\bin\Release\netcoreapp2.0\MQTTnet.Core.Tests.dll"