diff --git a/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj b/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj
index 5253a88b..8ea53215 100644
--- a/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj
+++ b/test/PhoneNumbers.Data.Tests/PhoneNumbers.Data.Tests.csproj
@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
       <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 8da773ca..ead32c62 100644
--- a/test/PhoneNumbers.Tests/PhoneNumbers.Tests.csproj
+++ b/test/PhoneNumbers.Tests/PhoneNumbers.Tests.csproj
@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">