diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index edec926..8e69fd3 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Setup dotnet
         uses: actions/setup-dotnet@a98b56852c35b8e3190ac28c8c2271da59106c68 # v6.0.0
         with:
-          dotnet-version: '10.0.x'
+          dotnet-version: '11.0.x'
       
       - name: Install dependencies
         run: dotnet restore
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 9617547..d00614e 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Setup dotnet
         uses: actions/setup-dotnet@a98b56852c35b8e3190ac28c8c2271da59106c68 # v6.0.0
         with:
-          dotnet-version: '10.0.x'
+          dotnet-version: '11.0.x'
 
       - name: Restore
         run: dotnet restore
diff --git a/CLAUDE.md b/CLAUDE.md
index e7de5f8..e1dc9d8 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -37,7 +37,7 @@ Solution file: `Internal.slnx`
 
 ## Build Configuration
 
-- .NET 10.0, latest C# language version
+- .NET 11.0 (C# 15 via `LangVersion=Latest`), runtime-native async (`runtime-async=on`)
 - Nullable reference types enabled globally
 - Central package management via `Directory.Packages.props`
 - `Directory.Build.props` enables implicit usings, XML docs, and treats warnings as errors in Debug
diff --git a/Directory.Build.props b/Directory.Build.props
index e56d6bb..8b0eaff 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
+    <TargetFramework>net11.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup>
@@ -35,6 +35,9 @@
     <AssemblyVersion>$(Version)</AssemblyVersion>
     <FileVersion>$(Version)</FileVersion>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <!-- Runtime-native async: async methods suspend/resume via the runtime instead of
+         compiler-generated state machines, giving cleaner stack traces and lower overhead. -->
+    <Features>$(Features);runtime-async=on</Features>
   </PropertyGroup>
   
   <PropertyGroup>
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 337b504..ec2807a 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -7,7 +7,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Bogus" Version="35.6.5" />
-    <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.3" />
+    <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="11.0.0-rc.1.1" />
     <PackageVersion Include="Semver" Version="3.0.0" />
     <PackageVersion Include="Serilog" Version="4.4.0" />
     <PackageVersion Include="Testcontainers.PostgreSql" Version="4.15.0" />
diff --git a/global.json b/global.json
index 7cceb99..5fb1b0c 100644
--- a/global.json
+++ b/global.json
@@ -1,8 +1,8 @@
 {
   "sdk": {
-    "version": "10.0.100",
+    "version": "11.0.100-rc.1.26425.128",
     "rollForward": "latestMinor",
-    "allowPrerelease": false
+    "allowPrerelease": true
   },
   "test": {
     "runner": "Microsoft.Testing.Platform"