diff --git a/Content.Client/Content.Client.csproj b/Content.Client/Content.Client.csproj
index 0e15fadfae3..956f2fd0351 100644
--- a/Content.Client/Content.Client.csproj
+++ b/Content.Client/Content.Client.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>11</LangVersion>
+    <LangVersion>12</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Client\</OutputPath>
diff --git a/Content.IntegrationTests/Content.IntegrationTests.csproj b/Content.IntegrationTests/Content.IntegrationTests.csproj
index ec93a47041d..2e922d25093 100644
--- a/Content.IntegrationTests/Content.IntegrationTests.csproj
+++ b/Content.IntegrationTests/Content.IntegrationTests.csproj
@@ -5,7 +5,7 @@
     <OutputPath>..\bin\Content.IntegrationTests\</OutputPath>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
-    <LangVersion>11</LangVersion>
+    <LangVersion>12</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="NUnit" />
diff --git a/Content.Replay/Content.Replay.csproj b/Content.Replay/Content.Replay.csproj
index 4b3c85345cf..9785870143d 100644
--- a/Content.Replay/Content.Replay.csproj
+++ b/Content.Replay/Content.Replay.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>10</LangVersion>
+    <LangVersion>12</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Replay\</OutputPath>
diff --git a/Content.Server.Database/Content.Server.Database.csproj b/Content.Server.Database/Content.Server.Database.csproj
index 31ab785c18e..d98d0642db0 100644
--- a/Content.Server.Database/Content.Server.Database.csproj
+++ b/Content.Server.Database/Content.Server.Database.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>11</LangVersion>
+    <LangVersion>12</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Server.Database\</OutputPath>
diff --git a/Content.Server/Content.Server.csproj b/Content.Server/Content.Server.csproj
index 96d642e4f2f..e398773d54f 100644
--- a/Content.Server/Content.Server.csproj
+++ b/Content.Server/Content.Server.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>11</LangVersion>
+    <LangVersion>12</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 e90e1ea7237..9752bfcfe2d 100644
--- a/Content.Shared/Content.Shared.csproj
+++ b/Content.Shared/Content.Shared.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>11</LangVersion>
+    <LangVersion>12</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <WarningsAsErrors>nullable</WarningsAsErrors>
diff --git a/Content.Tests/Content.Tests.csproj b/Content.Tests/Content.Tests.csproj
index a883892d872..ff295728fca 100644
--- a/Content.Tests/Content.Tests.csproj
+++ b/Content.Tests/Content.Tests.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <!-- Work around https://github.com/dotnet/project-system/issues/4314 -->
     <TargetFramework>$(TargetFramework)</TargetFramework>
-    <LangVersion>11</LangVersion>
+    <LangVersion>12</LangVersion>
     <IsPackable>false</IsPackable>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <OutputPath>..\bin\Content.Tests\</OutputPath>