diff --git a/SrcSet.Core.Tests/SrcSet.Core.Tests.csproj b/SrcSet.Core.Tests/SrcSet.Core.Tests.csproj
index 71ecb89..dd30f6d 100644
--- a/SrcSet.Core.Tests/SrcSet.Core.Tests.csproj
+++ b/SrcSet.Core.Tests/SrcSet.Core.Tests.csproj
@@ -7,7 +7,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<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"/>
 		<PackageReference Include="coverlet.collector" Version="10.0.1"/>
diff --git a/SrcSet.Statiq.Tests/SrcSet.Statiq.Tests.csproj b/SrcSet.Statiq.Tests/SrcSet.Statiq.Tests.csproj
index cce2ac8..c46942e 100644
--- a/SrcSet.Statiq.Tests/SrcSet.Statiq.Tests.csproj
+++ b/SrcSet.Statiq.Tests/SrcSet.Statiq.Tests.csproj
@@ -6,7 +6,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<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"/>
 		<PackageReference Include="coverlet.collector" Version="10.0.1"/>
diff --git a/SrcSet.Tests/SrcSet.Tests.csproj b/SrcSet.Tests/SrcSet.Tests.csproj
index 01090a5..dac266d 100644
--- a/SrcSet.Tests/SrcSet.Tests.csproj
+++ b/SrcSet.Tests/SrcSet.Tests.csproj
@@ -6,7 +6,7 @@
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0"/>
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.8.1"/>
 		<PackageReference Include="NSubstitute" Version="6.0.0"/>
 		<PackageReference Include="xunit" Version="2.9.3"/>
 		<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5"/>