diff --git a/.github/workflows/publish-nuget-packages.yaml b/.github/workflows/publish-nuget-packages.yaml
index 8d21582..00e1cb3 100644
--- a/.github/workflows/publish-nuget-packages.yaml
+++ b/.github/workflows/publish-nuget-packages.yaml
@@ -11,7 +11,7 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.0.100'
+        dotnet-version: '5.0.100'
     - run: dotnet pack src/prometheus-net.DotNetRuntime --include-symbols -c "ReleaseV2" --output "build/"
     - run: dotnet nuget push "build/prometheus-net.DotNetRuntime.2.*.symbols.nupkg" -k ${{ secrets.NUGET_API_KEY }} -s "https://api.nuget.org/v3/index.json" -n true
 
@@ -22,6 +22,6 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.0.100'
+        dotnet-version: '5.0.100'
     - run: dotnet pack src/prometheus-net.DotNetRuntime --include-symbols -c "ReleaseV3" --output "build/"
     - run: dotnet nuget push "build/prometheus-net.DotNetRuntime.3.*.symbols.nupkg" -k ${{ secrets.NUGET_API_KEY }} -s "https://api.nuget.org/v3/index.json" -n true
diff --git a/.github/workflows/run-tests.yaml b/.github/workflows/run-tests.yaml
index d6e7898..6628ace 100644
--- a/.github/workflows/run-tests.yaml
+++ b/.github/workflows/run-tests.yaml
@@ -12,7 +12,7 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.0.100'
+        dotnet-version: '5.0.100'
     # excluding When_IO_work_is_executed_on_the_thread_pool_then_the_number_of_io_threads_is_measured for now, for some reason we don't seem to be
     # generating IO thread events in the github actions environment
     - run: dotnet test -c "DebugV2" --filter Name!=When_IO_work_is_executed_on_the_thread_pool_then_the_number_of_io_threads_is_measured
@@ -23,5 +23,5 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '3.0.100'
+        dotnet-version: '5.0.100'
     - run: dotnet test -c "DebugV3" --filter Name!=When_IO_work_is_executed_on_the_thread_pool_then_the_number_of_io_threads_is_measured
diff --git a/src/prometheus-net.DotNetRuntime.Tests/prometheus-net.DotNetRuntime.Tests.csproj b/src/prometheus-net.DotNetRuntime.Tests/prometheus-net.DotNetRuntime.Tests.csproj
index 38f2b9f..750859b 100644
--- a/src/prometheus-net.DotNetRuntime.Tests/prometheus-net.DotNetRuntime.Tests.csproj
+++ b/src/prometheus-net.DotNetRuntime.Tests/prometheus-net.DotNetRuntime.Tests.csproj
@@ -2,7 +2,7 @@
     <Import Project="../Common.csproj"/>
 
     <PropertyGroup>
-        <TargetFramework>netcoreapp3.0</TargetFramework>
+        <TargetFramework>net5.0</TargetFramework>
         <IsPackable>false</IsPackable>
         <RootNamespace>Prometheus.DotNetRuntime.Tests</RootNamespace>
         <Platforms>AnyCPU</Platforms>
diff --git a/src/prometheus-net.DotNetRuntime/prometheus-net.DotNetRuntime.csproj b/src/prometheus-net.DotNetRuntime/prometheus-net.DotNetRuntime.csproj
index 9205e61..73e4d02 100644
--- a/src/prometheus-net.DotNetRuntime/prometheus-net.DotNetRuntime.csproj
+++ b/src/prometheus-net.DotNetRuntime/prometheus-net.DotNetRuntime.csproj
@@ -6,7 +6,7 @@
         <AssemblyName>prometheus-net.DotNetRuntime</AssemblyName>
         <PackageId>prometheus-net.DotNetRuntime</PackageId>
         <!-- TODO use git versioning -->
-        <Version>$(PromMajorVersion).4.0</Version>
+        <Version>$(PromMajorVersion).4.1</Version>
         <Authors>James Luck</Authors>
         <PackageTags>Prometheus prometheus-net IOnDemandCollector runtime metrics gc jit threadpool contention stats</PackageTags>
         <PackageProjectUrl>https://github.com/djluck/prometheus-net.DotNetRuntime</PackageProjectUrl>
@@ -16,8 +16,7 @@
         <PackageLicense>https://github.com/djluck/prometheus-net.DotNetRuntime/blob/master/LICENSE.txt</PackageLicense>
         <Configurations>ReleaseV2;DebugV2;DebugV3;ReleaseV3</Configurations>
         <Platforms>AnyCPU</Platforms>
-        <TargetFrameworks>netcoreapp2.2;netcoreapp3.0;netstandard2.1</TargetFrameworks>
-        <LangVersion>8</LangVersion>
+        <TargetFrameworks>netcoreapp2.2;netcoreapp3.0;netstandard2.1;net5.0</TargetFrameworks>
         <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
         <NoWarn>1701;1702;CS1591;</NoWarn>
     </PropertyGroup>
@@ -25,7 +24,7 @@
     <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1'">
         <PackageReference Include="System.Collections.Immutable" Version="1.6.0" />
     </ItemGroup>
-
+       
     <PropertyGroup Condition=" '$(Configuration)' == 'ReleaseV2' ">
       <DocumentationFile>bin\ReleaseV2\prometheus-net.DotNetRuntime.xml</DocumentationFile>
     </PropertyGroup>