diff --git a/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj b/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj
index 26f0f54c..b4196f38 100644
--- a/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj
+++ b/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj
@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/test/PhoneNumbers.Tests/PhoneNumbers.Tests.csproj b/test/PhoneNumbers.Tests/PhoneNumbers.Tests.csproj
index 58e37b9d..21b950d4 100644
--- a/test/PhoneNumbers.Tests/PhoneNumbers.Tests.csproj
+++ b/test/PhoneNumbers.Tests/PhoneNumbers.Tests.csproj
@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">