diff --git a/src/Tests/MorganStanley.Fdc3.AppDirectory.Tests/MorganStanley.Fdc3.AppDirectory.Tests.csproj b/src/Tests/MorganStanley.Fdc3.AppDirectory.Tests/MorganStanley.Fdc3.AppDirectory.Tests.csproj
index 3ddbcb8..8527c2e 100644
--- a/src/Tests/MorganStanley.Fdc3.AppDirectory.Tests/MorganStanley.Fdc3.AppDirectory.Tests.csproj
+++ b/src/Tests/MorganStanley.Fdc3.AppDirectory.Tests/MorganStanley.Fdc3.AppDirectory.Tests.csproj
@@ -1,4 +1,4 @@
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+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
@@ -21,7 +21,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
     <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1">
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
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diff --git a/src/Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests.csproj b/src/Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests.csproj
index 1be459d..9d1e6bc 100644
--- a/src/Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests.csproj
+++ b/src/Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests/MorganStanley.Fdc3.NewtonsoftJson.Tests.csproj
@@ -23,7 +23,7 @@
         <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
         <PackageReference Include="Newtonsoft.Json.Schema" Version="3.0.14" />
         <PackageReference Include="xunit" Version="2.5.1" />
-        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1">
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
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diff --git a/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj b/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj
index 83aa389..e391b7d 100644
--- a/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj
+++ b/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj
@@ -11,7 +11,7 @@
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     <PackageReference Include="xunit" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1">
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