diff --git a/test/ExpressionPowerTools.Core.Tests/ExpressionPowerTools.Core.Tests.csproj b/test/ExpressionPowerTools.Core.Tests/ExpressionPowerTools.Core.Tests.csproj
index b9c109f60..60fe035cb 100644
--- a/test/ExpressionPowerTools.Core.Tests/ExpressionPowerTools.Core.Tests.csproj
+++ b/test/ExpressionPowerTools.Core.Tests/ExpressionPowerTools.Core.Tests.csproj
@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
diff --git a/test/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests.csproj b/test/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests.csproj
index 957b997f1..c27a34fcd 100644
--- a/test/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests.csproj
+++ b/test/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests/ExpressionPowerTools.Serialization.EFCore.AspNetCore.Tests.csproj
@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="3.1.9" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="3.1.9" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
diff --git a/test/ExpressionPowerTools.Serialization.EFCore.Http.Tests/ExpressionPowerTools.Serialization.EFCore.Http.Tests.csproj b/test/ExpressionPowerTools.Serialization.EFCore.Http.Tests/ExpressionPowerTools.Serialization.EFCore.Http.Tests.csproj
index 70c7fdfaa..b87e2bd7b 100644
--- a/test/ExpressionPowerTools.Serialization.EFCore.Http.Tests/ExpressionPowerTools.Serialization.EFCore.Http.Tests.csproj
+++ b/test/ExpressionPowerTools.Serialization.EFCore.Http.Tests/ExpressionPowerTools.Serialization.EFCore.Http.Tests.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
diff --git a/test/ExpressionPowerTools.Serialization.Tests/ExpressionPowerTools.Serialization.Tests.csproj b/test/ExpressionPowerTools.Serialization.Tests/ExpressionPowerTools.Serialization.Tests.csproj
index d89a9512a..ce329af97 100644
--- a/test/ExpressionPowerTools.Serialization.Tests/ExpressionPowerTools.Serialization.Tests.csproj
+++ b/test/ExpressionPowerTools.Serialization.Tests/ExpressionPowerTools.Serialization.Tests.csproj
@@ -15,7 +15,7 @@
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   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
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