diff --git a/test/Microsoft.OpenApi.Hidi.Tests/Microsoft.OpenApi.Hidi.Tests.csproj b/test/Microsoft.OpenApi.Hidi.Tests/Microsoft.OpenApi.Hidi.Tests.csproj
index c5857909d..a22b6a7da 100644
--- a/test/Microsoft.OpenApi.Hidi.Tests/Microsoft.OpenApi.Hidi.Tests.csproj
+++ b/test/Microsoft.OpenApi.Hidi.Tests/Microsoft.OpenApi.Hidi.Tests.csproj
@@ -14,7 +14,7 @@
     <PackageReference Include="coverlet.msbuild" Version="6.0.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="Moq" Version="4.20.70" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6" PrivateAssets="all" />
     <PackageReference Include="coverlet.collector" Version="6.0.0" PrivateAssets="all" />
   </ItemGroup>
diff --git a/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj b/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj
index 79a80563a..7a89c0044 100644
--- a/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj
+++ b/test/Microsoft.OpenApi.Readers.Tests/Microsoft.OpenApi.Readers.Tests.csproj
@@ -21,7 +21,7 @@
         <PackageReference Include="FluentAssertions" Version="6.12.0" />
         <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
         <PackageReference Include="SharpYaml" Version="2.1.0" />
-        <PackageReference Include="xunit" Version="2.6.5" />
+        <PackageReference Include="xunit" Version="2.6.6" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6" PrivateAssets="all" />
     </ItemGroup>
 
diff --git a/test/Microsoft.OpenApi.SmokeTests/Microsoft.OpenApi.SmokeTests.csproj b/test/Microsoft.OpenApi.SmokeTests/Microsoft.OpenApi.SmokeTests.csproj
index 5fe493b42..9d61bcab3 100644
--- a/test/Microsoft.OpenApi.SmokeTests/Microsoft.OpenApi.SmokeTests.csproj
+++ b/test/Microsoft.OpenApi.SmokeTests/Microsoft.OpenApi.SmokeTests.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="coverlet.msbuild" Version="6.0.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6" PrivateAssets="all" />
   </ItemGroup>
 
diff --git a/test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj b/test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj
index 8cbcfd872..8fce973d7 100644
--- a/test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj
+++ b/test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="SharpYaml" Version="2.1.0" />
     <PackageReference Include="Verify.Xunit" Version="22.11.5" />
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
     <PackageReference Include="PublicApiGenerator" Version="11.1.0" />