diff --git a/RomRepoMgr.Core/RomRepoMgr.Core.csproj b/RomRepoMgr.Core/RomRepoMgr.Core.csproj
index 89ccb7f..b8c7293 100644
--- a/RomRepoMgr.Core/RomRepoMgr.Core.csproj
+++ b/RomRepoMgr.Core/RomRepoMgr.Core.csproj
@@ -1,8 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>net5.0</TargetFramework>
         <NeutralLanguage>en</NeutralLanguage>
+        <LangVersion>9</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/RomRepoMgr.Database/RomRepoMgr.Database.csproj b/RomRepoMgr.Database/RomRepoMgr.Database.csproj
index ec5392d..8f9fba4 100644
--- a/RomRepoMgr.Database/RomRepoMgr.Database.csproj
+++ b/RomRepoMgr.Database/RomRepoMgr.Database.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>net5.0</TargetFramework>
+        <LangVersion>9</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/RomRepoMgr.Settings/RomRepoMgr.Settings.csproj b/RomRepoMgr.Settings/RomRepoMgr.Settings.csproj
index a9aab5f..55c1924 100644
--- a/RomRepoMgr.Settings/RomRepoMgr.Settings.csproj
+++ b/RomRepoMgr.Settings/RomRepoMgr.Settings.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>net5.0</TargetFramework>
+        <LangVersion>9</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/RomRepoMgr/RomRepoMgr.csproj b/RomRepoMgr/RomRepoMgr.csproj
index 9bdc7f5..f5de696 100644
--- a/RomRepoMgr/RomRepoMgr.csproj
+++ b/RomRepoMgr/RomRepoMgr.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <OutputType>WinExe</OutputType>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>net5.0</TargetFramework>
+        <LangVersion>9</LangVersion>
     </PropertyGroup>
     <ItemGroup>
         <Compile Update="**\*.xaml.cs">