diff --git a/CHANGELOG.md b/CHANGELOG.md
index 430f164b62..958bfc46d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,7 +22,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Bumps `Spectre.Console` from 0.47.0 to 0.48.0
 - Bumps `System.Text.Encodings.Web` from 7.0.0 to 8.0.0
 - Bumps `xunit.runner.visualstudio` from 2.5.4 to 2.5.6
-- Bumps `xunit` from 2.6.2 to 2.6.5
+- Bumps `xunit` from 2.6.2 to 2.6.6
 - Bumps `Argu` from 6.1.1 to 6.1.5
 - Bumps `Microsoft.NET.Test.Sdk` from 17.7.2 to 17.8.0
 - Bumps `JetBrains.Annotations` from 2023.2.0 to 2023.3.0
diff --git a/abstractions/src/OpenSearch.OpenSearch.Xunit/OpenSearch.OpenSearch.Xunit.csproj b/abstractions/src/OpenSearch.OpenSearch.Xunit/OpenSearch.OpenSearch.Xunit.csproj
index b694ef4494..f525edfad5 100644
--- a/abstractions/src/OpenSearch.OpenSearch.Xunit/OpenSearch.OpenSearch.Xunit.csproj
+++ b/abstractions/src/OpenSearch.OpenSearch.Xunit/OpenSearch.OpenSearch.Xunit.csproj
@@ -8,7 +8,7 @@
     <SignAssembly>true</SignAssembly>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenSearch.OpenSearch.Ephemeral\OpenSearch.OpenSearch.Ephemeral.csproj" />
diff --git a/tests/Tests.Core/Tests.Core.csproj b/tests/Tests.Core/Tests.Core.csproj
index 75bd7ca109..6db73a6952 100644
--- a/tests/Tests.Core/Tests.Core.csproj
+++ b/tests/Tests.Core/Tests.Core.csproj
@@ -15,7 +15,7 @@
     <ProjectReference Include="$(SolutionRoot)\tests\Tests.Domain\Tests.Domain.csproj" />
     <PackageReference Include="Microsoft.TestPlatform.ObjectModel" Version="17.8.0" />
 
-    <PackageReference Include="xunit" Version="2.6.5" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <ProjectReference Include="$(SolutionRoot)\abstractions\src\OpenSearch.OpenSearch.Xunit\OpenSearch.OpenSearch.Xunit.csproj" />
     <PackageReference Include="JunitXml.TestLogger" Version="3.0.134" />