diff --git a/Tests/Hasher.SHA1/HasherTests.cs b/Tests/Hasher.SHA1/HasherTests.cs
index 0787312..8b15098 100644
--- a/Tests/Hasher.SHA1/HasherTests.cs
+++ b/Tests/Hasher.SHA1/HasherTests.cs
@@ -31,6 +31,7 @@
 
         // Single-threaded SHA1 performance on i5-6500 is around 500MB/s
         [Theory]
+        [Trait("Category", "Integration")]
         [InlineData(0)]
         [InlineData(1)]
         [InlineData(1000)]
diff --git a/appveyor.yml b/appveyor.yml
index d1428a9..533f16b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,5 +5,5 @@ before_build:
 build:
   verbosity: minimal
 test_script:
-- cmd: dotnet test tests\Encryptor.ClearText\EternalArrowBackup.Encryptor.ClearText.Tests.csproj
-- cmd: dotnet test tests\Hasher.SHA1\EternalArrowBackup.Hasher.SHA1.Tests.csproj
+- cmd: dotnet test --filter Category!=Integration tests\Encryptor.ClearText\EternalArrowBackup.Encryptor.ClearText.Tests.csproj
+- cmd: dotnet test --filter Category!=Integration tests\Hasher.SHA1\EternalArrowBackup.Hasher.SHA1.Tests.csproj