diff --git a/Content.Benchmarks/Content.Benchmarks.csproj b/Content.Benchmarks/Content.Benchmarks.csproj
index 2eedacc7f0..194ddc4d61 100644
--- a/Content.Benchmarks/Content.Benchmarks.csproj
+++ b/Content.Benchmarks/Content.Benchmarks.csproj
@@ -8,7 +8,7 @@
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputType>Exe</OutputType>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
diff --git a/Content.Client/Content.Client.csproj b/Content.Client/Content.Client.csproj
index 38f4d32250..66beb8956c 100644
--- a/Content.Client/Content.Client.csproj
+++ b/Content.Client/Content.Client.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Client\</OutputPath>
diff --git a/Content.IntegrationTests/Content.IntegrationTests.csproj b/Content.IntegrationTests/Content.IntegrationTests.csproj
index b7587d5ec8..1452fb6809 100644
--- a/Content.IntegrationTests/Content.IntegrationTests.csproj
+++ b/Content.IntegrationTests/Content.IntegrationTests.csproj
@@ -6,7 +6,7 @@
     <OutputPath>..\bin\Content.IntegrationTests\</OutputPath>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
   </PropertyGroup>
   <Import Project="..\RobustToolbox\MSBuild\Robust.DefineConstants.targets" />
   <ItemGroup>
diff --git a/Content.Server.Database/Content.Server.Database.csproj b/Content.Server.Database/Content.Server.Database.csproj
index 4daa852b65..2cf17ebfd3 100644
--- a/Content.Server.Database/Content.Server.Database.csproj
+++ b/Content.Server.Database/Content.Server.Database.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Server.Database\</OutputPath>
diff --git a/Content.Server/Content.Server.csproj b/Content.Server/Content.Server.csproj
index e13b99e8a1..8923cb0774 100644
--- a/Content.Server/Content.Server.csproj
+++ b/Content.Server/Content.Server.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Server\</OutputPath>
diff --git a/Content.Shared/Content.Shared.csproj b/Content.Shared/Content.Shared.csproj
index ec92c5eb36..09cb30317d 100644
--- a/Content.Shared/Content.Shared.csproj
+++ b/Content.Shared/Content.Shared.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>../bin/Content.Shared</OutputPath>
diff --git a/Content.Tests/Content.Tests.csproj b/Content.Tests/Content.Tests.csproj
index f82a4628d7..74b5abb421 100644
--- a/Content.Tests/Content.Tests.csproj
+++ b/Content.Tests/Content.Tests.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>8</LangVersion>
+    <LangVersion>9</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Tests\</OutputPath>