diff --git a/src/Minimalist.Reactive.Tests/Minimalist.Reactive.Tests.csproj b/src/Minimalist.Reactive.Tests/Minimalist.Reactive.Tests.csproj
index d2292b2..d5cdf82 100644
--- a/src/Minimalist.Reactive.Tests/Minimalist.Reactive.Tests.csproj
+++ b/src/Minimalist.Reactive.Tests/Minimalist.Reactive.Tests.csproj
@@ -8,7 +8,7 @@
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+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="xunit" Version="2.7.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.7">
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