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 234b439..a51a95f 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
@@ -20,7 +20,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
-    <PackageReference Include="xunit" Version="2.4.2" />
+    <PackageReference Include="xunit" Version="2.5.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
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 ddde2b6..b099a9d 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
@@ -22,7 +22,7 @@
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
         <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
         <PackageReference Include="Newtonsoft.Json.Schema" Version="3.0.14" />
-        <PackageReference Include="xunit" Version="2.5.0" />
+        <PackageReference Include="xunit" Version="2.5.1" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
diff --git a/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj b/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj
index 4c5827a..7531173 100644
--- a/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj
+++ b/src/Tests/MorganStanley.Fdc3.Tests/MorganStanley.Fdc3.Tests.csproj
@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.0" />
+    <PackageReference Include="xunit" Version="2.5.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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