diff --git a/tests/IntervalGenerator.Integration.Tests/IntervalGenerator.Integration.Tests.csproj b/tests/IntervalGenerator.Integration.Tests/IntervalGenerator.Integration.Tests.csproj
index 8247cfb..d098a6c 100644
--- a/tests/IntervalGenerator.Integration.Tests/IntervalGenerator.Integration.Tests.csproj
+++ b/tests/IntervalGenerator.Integration.Tests/IntervalGenerator.Integration.Tests.csproj
@@ -10,7 +10,7 @@
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     <PackageReference Include="FluentAssertions" Version="8.8.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
diff --git a/tests/IntervalGenerator.Profiles.Tests/IntervalGenerator.Profiles.Tests.csproj b/tests/IntervalGenerator.Profiles.Tests/IntervalGenerator.Profiles.Tests.csproj
index 8154b10..aa3cb73 100644
--- a/tests/IntervalGenerator.Profiles.Tests/IntervalGenerator.Profiles.Tests.csproj
+++ b/tests/IntervalGenerator.Profiles.Tests/IntervalGenerator.Profiles.Tests.csproj
@@ -10,7 +10,7 @@
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     <PackageReference Include="FluentAssertions" Version="8.8.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageReference Include="NSubstitute" Version="5.3.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />