diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cc09fda9..14911f0a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,10 +23,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
-      - name: Setup .NET 9 SDK
+      - name: Setup .NET 10 SDK
         uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: 9.0.x
+          dotnet-version: 10.0.x
 
       - name: Cache NuGet packages
         uses: actions/cache@v5
@@ -95,10 +95,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
-      - name: Setup .NET 9 SDK
+      - name: Setup .NET 10 SDK
         uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: 9.0.x
+          dotnet-version: 10.0.x
 
       - name: Restore
         run: dotnet restore SysManager/SysManager.UITests/SysManager.UITests.csproj
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index c7c9fa92..0e82e87c 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -22,10 +22,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
-      - name: Setup .NET 9 SDK
+      - name: Setup .NET 10 SDK
         uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: 9.0.x
+          dotnet-version: 10.0.x
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 030860ca..b9886912 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -26,10 +26,10 @@ jobs:
         with:
           ref: ${{ inputs.tag || github.ref }}
 
-      - name: Setup .NET 9 SDK
+      - name: Setup .NET 10 SDK
         uses: actions/setup-dotnet@v5
         with:
-          dotnet-version: 9.0.x
+          dotnet-version: 10.0.x
 
       - name: Extract tag version
         id: version
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c253de45..96bfff1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,11 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Changed
+- **BREAKING:** migrated from .NET 9 to .NET 10 — requires .NET 10 Desktop Runtime
+  to run. All projects (main, tests, integration tests, UI tests) now target
+  `net10.0-windows`. CI workflows updated to use .NET 10 SDK.
+
 ## [0.48.39] - 2026-05-20
 
 ### Fixed
diff --git a/README.md b/README.md
index 89304308..0f5b06f9 100644
--- a/README.md
+++ b/README.md
@@ -383,7 +383,7 @@ recommended mitigation — see [SECURITY.md](SECURITY.md) for details.
 
 ## Build from source
 
-Prerequisites: Windows 10 or newer and the [.NET 9 SDK](https://dotnet.microsoft.com/download/dotnet/9.0).
+Prerequisites: Windows 10 or newer and the [.NET 10 SDK](https://dotnet.microsoft.com/download/dotnet/10.0).
 
 ```powershell
 git clone https://github.com/laurentiu021/SystemManager.git
@@ -450,7 +450,7 @@ and elevation state in a format ready to paste into a bug report.
 
 ## Tech stack
 
-- .NET 9 (WPF, C# 13)
+- .NET 10 (WPF, C# 14)
 - CommunityToolkit.Mvvm for MVVM plumbing
 - Microsoft.Extensions.DependencyInjection for IoC
 - ModernWpfUI for the modern title bar
diff --git a/SECURITY.md b/SECURITY.md
index d342a64b..308ceed8 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -12,9 +12,9 @@ older build, the first step is usually to update.
 
 | Version | Supported          |
 | ------- | ------------------ |
-| 0.48.x  | :white_check_mark: |
-| 0.47.x  | :x:                |
-| < 0.47  | :x:                |
+| 0.49.x  | :white_check_mark: |
+| 0.48.x  | :x:                |
+| < 0.48  | :x:                |
 
 ## Reporting a vulnerability
 
diff --git a/SysManager/SysManager.IntegrationTests/SysManager.IntegrationTests.csproj b/SysManager/SysManager.IntegrationTests/SysManager.IntegrationTests.csproj
index c06346bc..17719eb3 100644
--- a/SysManager/SysManager.IntegrationTests/SysManager.IntegrationTests.csproj
+++ b/SysManager/SysManager.IntegrationTests/SysManager.IntegrationTests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net9.0-windows</TargetFramework>
+    <TargetFramework>net10.0-windows</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <UseWPF>true</UseWPF>
diff --git a/SysManager/SysManager.Tests/SysManager.Tests.csproj b/SysManager/SysManager.Tests/SysManager.Tests.csproj
index e4cab9d7..bb928f92 100644
--- a/SysManager/SysManager.Tests/SysManager.Tests.csproj
+++ b/SysManager/SysManager.Tests/SysManager.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net9.0-windows</TargetFramework>
+    <TargetFramework>net10.0-windows</TargetFramework>
     <UseWPF>true</UseWPF>
 
     <IsPackable>false</IsPackable>
diff --git a/SysManager/SysManager.UITests/SysManager.UITests.csproj b/SysManager/SysManager.UITests/SysManager.UITests.csproj
index 8ea370fb..604e5fb6 100644
--- a/SysManager/SysManager.UITests/SysManager.UITests.csproj
+++ b/SysManager/SysManager.UITests/SysManager.UITests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net9.0-windows</TargetFramework>
+    <TargetFramework>net10.0-windows</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <UseWPF>true</UseWPF>
diff --git a/SysManager/SysManager/SysManager.csproj b/SysManager/SysManager/SysManager.csproj
index 9a23f88a..9b5221ff 100644
--- a/SysManager/SysManager/SysManager.csproj
+++ b/SysManager/SysManager/SysManager.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net9.0-windows</TargetFramework>
+    <TargetFramework>net10.0-windows</TargetFramework>
     <UseWPF>true</UseWPF>
     <ApplicationManifest>app.manifest</ApplicationManifest>
     <ApplicationIcon>Resources\app.ico</ApplicationIcon>