diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index c260e54d..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-language: csharp
-solution: MQTTnet.sln
-
-matrix:
-  include:
-    - dotnet: 2.0.0
-      mono: none
-      dist: trusty
-      env: DOTNETCORE=1  # optional, can be used to take different code paths in your script
-    - mono: latest
\ No newline at end of file
diff --git a/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj b/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj
index e408f10a..f9427b6d 100644
--- a/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj
+++ b/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows.csproj
@@ -18,7 +18,7 @@
     <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>
     <PackageCertificateKeyFile>MQTTnet.TestApp.UniversalWindows_TemporaryKey.pfx</PackageCertificateKeyFile>
-    <PackageCertificateThumbprint>6B99AEE2D6C4A05C2FC9162A71D02388D66DFEEF</PackageCertificateThumbprint>
+    <PackageCertificateThumbprint>1D7434E482CF034DD18C9E6AB6B12622E08FD733</PackageCertificateThumbprint>
     <RuntimeIdentifiers>win10;win10-arm;win10-arm-aot;win10-x86;win10-x86-aot;win10-x64;win10-x64-aot</RuntimeIdentifiers>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
diff --git a/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows_TemporaryKey.pfx b/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows_TemporaryKey.pfx
index 0af6b538..a81c26ab 100644
Binary files a/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows_TemporaryKey.pfx and b/Tests/MQTTnet.TestApp.UniversalWindows/MQTTnet.TestApp.UniversalWindows_TemporaryKey.pfx differ
diff --git a/appveyor.yml b/appveyor.yml
index 43a3dd9d..24ea5f4b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,5 +12,7 @@ before_build:
 build:
   project: MQTTnet.sln
   verbosity: minimal
+
 test_script:
-- cmd: dotnet vstest "%APPVEYOR_BUILD_FOLDER%\Tests\MQTTnet.Core.Tests\bin\Release\netcoreapp2.0\MQTTnet.Core.Tests.dll"
+- cmd: dotnet vstest "%APPVEYOR_BUILD_FOLDER%\Tests\MQTTnet.Core.Tests\bin\Release\netcoreapp2.1\MQTTnet.Core.Tests.dll"
+- cmd: dotnet vstest "%APPVEYOR_BUILD_FOLDER%\Tests\MQTTnet.TestApp.AspNetCore\bin\Release\netcoreapp2.1\MQTTnet.TestApp.AspNetCore.dll"