diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index e222bfbb4e..9520ffe611 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -14,7 +14,7 @@
 		<PackageVersion Include="Microsoft.Extensions.Http" Version="6.0.0" Condition="$(UseMaui) != 'true'" />
 		<PackageVersion Include="Microsoft.Extensions.Localization.Abstractions" Version="6.0.4" Condition="$(UseMaui) != 'true'" />
 		<PackageVersion Include="Microsoft.Extensions.Logging" Version="6.0.0" />
-		<PackageVersion Include="Microsoft.Identity.Client" Version="4.47.0" />
+		<PackageVersion Include="Microsoft.Identity.Client" Version="4.55.0" />
 		<PackageVersion Include="Microsoft.Identity.Client.Extensions.Msal" Version="2.22.0" />
 		<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.6.2" />
 		<PackageVersion Include="Microsoft.Net.Compilers.Toolset" Version="4.2.0" />
diff --git a/testing/TestHarness/Directory.Packages.props b/testing/TestHarness/Directory.Packages.props
index 0e9f75e965..92c2f6bba4 100644
--- a/testing/TestHarness/Directory.Packages.props
+++ b/testing/TestHarness/Directory.Packages.props
@@ -11,7 +11,7 @@
 		<PackageVersion Include="Microsoft.AspNetCore.Authentication.MicrosoftAccount" Version="6.0.7" />
 		<PackageVersion Include="Microsoft.Extensions.Logging" Version="6.0.0" />
 		<PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="6.0.0" />
-		<PackageVersion Include="Microsoft.Identity.Client" Version="4.47.0" />
+		<PackageVersion Include="Microsoft.Identity.Client" Version="4.55.0" />
 		<PackageVersion Include="Microsoft.Net.Compilers.Toolset" Version="4.2.0" />
 		<PackageVersion Include="Microsoft.NETCore.UniversalWindowsPlatform" Version="6.2.11" />
 		<PackageVersion Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.2" />