diff --git a/ReaderMonad.Tests/ReaderMonad.Tests.csproj b/ReaderMonad.Tests/ReaderMonad.Tests.csproj
index 44fdc97..8fe8909 100644
--- a/ReaderMonad.Tests/ReaderMonad.Tests.csproj
+++ b/ReaderMonad.Tests/ReaderMonad.Tests.csproj
@@ -11,7 +11,7 @@
 
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-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>