diff --git a/DFe.Utils/DFe.Utils.csproj b/DFe.Utils/DFe.Utils.csproj
index 0d28a05a6..af462eec0 100755
--- a/DFe.Utils/DFe.Utils.csproj
+++ b/DFe.Utils/DFe.Utils.csproj
@@ -26,6 +26,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -35,6 +36,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/DFe.Utils/DFe.Utils.csproj.DotSettings b/DFe.Utils/DFe.Utils.csproj.DotSettings
deleted file mode 100644
index 662f95686..000000000
--- a/DFe.Utils/DFe.Utils.csproj.DotSettings
+++ /dev/null
@@ -1,2 +0,0 @@
-<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:String x:Key="/Default/CodeInspection/CSharpLanguageProject/LanguageLevel/@EntryValue">CSharp50</s:String></wpf:ResourceDictionary>
\ No newline at end of file
diff --git a/NFe.AppTeste.NetCore/NFe.AppTeste.NetCore.csproj b/NFe.AppTeste.NetCore/NFe.AppTeste.NetCore.csproj
index 7a9801892..deb176960 100644
--- a/NFe.AppTeste.NetCore/NFe.AppTeste.NetCore.csproj
+++ b/NFe.AppTeste.NetCore/NFe.AppTeste.NetCore.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/NFe.Danfe.AppTeste.NetCore/NFe.Danfe.AppTeste.NetCore.csproj b/NFe.Danfe.AppTeste.NetCore/NFe.Danfe.AppTeste.NetCore.csproj
index bfdb5de9d..fcb4c3636 100644
--- a/NFe.Danfe.AppTeste.NetCore/NFe.Danfe.AppTeste.NetCore.csproj
+++ b/NFe.Danfe.AppTeste.NetCore/NFe.Danfe.AppTeste.NetCore.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>