diff --git a/src/System.Management.Automation/SourceGenerators/PSVersionInfoGenerator/PSVersionInfoGenerator.csproj b/src/System.Management.Automation/SourceGenerators/PSVersionInfoGenerator/PSVersionInfoGenerator.csproj
index 5e7287debb..80b911bc8e 100644
--- a/src/System.Management.Automation/SourceGenerators/PSVersionInfoGenerator/PSVersionInfoGenerator.csproj
+++ b/src/System.Management.Automation/SourceGenerators/PSVersionInfoGenerator/PSVersionInfoGenerator.csproj
@@ -7,7 +7,7 @@
   <PropertyGroup>
     <!-- source generator project needs to target 'netstandard2.0' -->
     <TargetFramework>netstandard2.0</TargetFramework>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
     <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
     <EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
     <Nullable>enable</Nullable>
diff --git a/test/perf/dotnet-tools/ResultsComparer/ResultsComparer.csproj b/test/perf/dotnet-tools/ResultsComparer/ResultsComparer.csproj
index 98a949de64..48cad7ffd8 100644
--- a/test/perf/dotnet-tools/ResultsComparer/ResultsComparer.csproj
+++ b/test/perf/dotnet-tools/ResultsComparer/ResultsComparer.csproj
@@ -3,7 +3,7 @@
     <OutputType>Exe</OutputType>
     <TargetFrameworks>$(PERFLAB_TARGET_FRAMEWORKS)</TargetFrameworks>
     <TargetFramework Condition="'$(TargetFrameworks)' == ''">net5.0</TargetFramework>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.9.1" />
diff --git a/test/tools/NamedPipeConnection/src/code/Microsoft.PowerShell.NamedPipeConnection.csproj b/test/tools/NamedPipeConnection/src/code/Microsoft.PowerShell.NamedPipeConnection.csproj
index b3d5b83a79..9bf74075ac 100644
--- a/test/tools/NamedPipeConnection/src/code/Microsoft.PowerShell.NamedPipeConnection.csproj
+++ b/test/tools/NamedPipeConnection/src/code/Microsoft.PowerShell.NamedPipeConnection.csproj
@@ -10,7 +10,7 @@
     <InformationalVersion>1.0.0</InformationalVersion>
     <TargetFrameworks>net9.0</TargetFrameworks>
     <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/tools/packaging/projects/reference/Microsoft.PowerShell.Commands.Utility/Microsoft.PowerShell.Commands.Utility.csproj b/tools/packaging/projects/reference/Microsoft.PowerShell.Commands.Utility/Microsoft.PowerShell.Commands.Utility.csproj
index cda0bb8385..eccdcfa947 100644
--- a/tools/packaging/projects/reference/Microsoft.PowerShell.Commands.Utility/Microsoft.PowerShell.Commands.Utility.csproj
+++ b/tools/packaging/projects/reference/Microsoft.PowerShell.Commands.Utility/Microsoft.PowerShell.Commands.Utility.csproj
@@ -5,7 +5,7 @@
     <DelaySign>true</DelaySign>
     <AssemblyOriginatorKeyFile>$(SnkFile)</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System.Management.Automation">
diff --git a/tools/packaging/projects/reference/Microsoft.PowerShell.ConsoleHost/Microsoft.PowerShell.ConsoleHost.csproj b/tools/packaging/projects/reference/Microsoft.PowerShell.ConsoleHost/Microsoft.PowerShell.ConsoleHost.csproj
index 37ea87be80..7f45926e29 100644
--- a/tools/packaging/projects/reference/Microsoft.PowerShell.ConsoleHost/Microsoft.PowerShell.ConsoleHost.csproj
+++ b/tools/packaging/projects/reference/Microsoft.PowerShell.ConsoleHost/Microsoft.PowerShell.ConsoleHost.csproj
@@ -5,7 +5,7 @@
     <DelaySign>true</DelaySign>
     <AssemblyOriginatorKeyFile>$(SnkFile)</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System.Management.Automation">
diff --git a/tools/packaging/projects/reference/System.Management.Automation/System.Management.Automation.csproj b/tools/packaging/projects/reference/System.Management.Automation/System.Management.Automation.csproj
index d4e2b460dc..3a021bb551 100644
--- a/tools/packaging/projects/reference/System.Management.Automation/System.Management.Automation.csproj
+++ b/tools/packaging/projects/reference/System.Management.Automation/System.Management.Automation.csproj
@@ -5,7 +5,7 @@
     <DelaySign>true</DelaySign>
     <AssemblyOriginatorKeyFile>$(SnkFile)</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>13.0</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.Management.Infrastructure" Version="3.0.0" />