diff --git a/Sieve.Sample/Sieve.Sample.csproj b/Sieve.Sample/Sieve.Sample.csproj
index 8aca6b9..8417b7e 100644
--- a/Sieve.Sample/Sieve.Sample.csproj
+++ b/Sieve.Sample/Sieve.Sample.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/SieveUnitTests/SieveUnitTests.csproj b/SieveUnitTests/SieveUnitTests.csproj
index 1c26e54..1c5b05a 100644
--- a/SieveUnitTests/SieveUnitTests.csproj
+++ b/SieveUnitTests/SieveUnitTests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/build/_build.csproj b/build/_build.csproj
index c432dd2..b2612d1 100644
--- a/build/_build.csproj
+++ b/build/_build.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
     <RootNamespace></RootNamespace>
     <NoWarn>CS0649;CS0169</NoWarn>
     <NukeRootDirectory>..</NukeRootDirectory>