diff --git a/src/AppCommon/FileTime.App.Core.Abstraction/FileTime.App.Core.Abstraction.csproj b/src/AppCommon/FileTime.App.Core.Abstraction/FileTime.App.Core.Abstraction.csproj
index 322fc5f..d88ad68 100644
--- a/src/AppCommon/FileTime.App.Core.Abstraction/FileTime.App.Core.Abstraction.csproj
+++ b/src/AppCommon/FileTime.App.Core.Abstraction/FileTime.App.Core.Abstraction.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <RootNamespace>FileTime.App.Core</RootNamespace>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/src/Core/FileTime.Core.Abstraction/FileTime.Core.Abstraction.csproj b/src/Core/FileTime.Core.Abstraction/FileTime.Core.Abstraction.csproj
index 455ffc8..34b269c 100644
--- a/src/Core/FileTime.Core.Abstraction/FileTime.Core.Abstraction.csproj
+++ b/src/Core/FileTime.Core.Abstraction/FileTime.Core.Abstraction.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <RootNamespace>FileTime.Core</RootNamespace>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/FileTime.GuiApp.Abstractions.csproj b/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/FileTime.GuiApp.Abstractions.csproj
index d054d62..3f49aba 100644
--- a/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/FileTime.GuiApp.Abstractions.csproj
+++ b/src/GuiApp/Avalonia/FileTime.GuiApp.Abstractions/FileTime.GuiApp.Abstractions.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <RootNamespace>FileTime.GuiApp</RootNamespace>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/src/Providers/FileTime.Providers.Local.Abstractions/FileTime.Providers.Local.Abstractions.csproj b/src/Providers/FileTime.Providers.Local.Abstractions/FileTime.Providers.Local.Abstractions.csproj
index 2046d63..49a5a5f 100644
--- a/src/Providers/FileTime.Providers.Local.Abstractions/FileTime.Providers.Local.Abstractions.csproj
+++ b/src/Providers/FileTime.Providers.Local.Abstractions/FileTime.Providers.Local.Abstractions.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <RootNamespace>FileTime.Providers.Local</RootNamespace>
   </PropertyGroup>
 
   <PropertyGroup>