diff --git a/src/Prometheus.Client.HealthChecks.csproj b/src/Prometheus.Client.HealthChecks.csproj
index 32fce7c..80d6a14 100644
--- a/src/Prometheus.Client.HealthChecks.csproj
+++ b/src/Prometheus.Client.HealthChecks.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <Description>HealthChecks middleware for the Prometheus.Client</Description>
-    <TargetFrameworks>netstandard2.0;netstandard2.1;net5.0;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
     <RepositoryUrl>https://github.com/prom-client-net/prom-client-healthchecks</RepositoryUrl>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <Nullable>enable</Nullable>
@@ -9,21 +9,17 @@
   <ItemGroup>
     <PackageReference Include="Prometheus.Client" Version="5.2.0" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0' OR '$(TargetFramework)' == 'netstandard2.1'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" Version="3.1.32" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions " Version="3.1.32" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">
-    <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" Version="5.0.17" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions " Version="5.0.0" />
-  </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
     <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" Version="6.0.31" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions " Version="6.0.0" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'net7.0'">
-    <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" Version="7.0.20" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions " Version="7.0.0" />
+  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
+    <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions" Version="8.0.6" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions " Version="8.0.1" />
   </ItemGroup>
   <ItemGroup>
     <InternalsVisibleTo Include="$(MSBuildProjectName).Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100bd315a84b04ab1fc9fe2c21de76ff484ac7b134a21a9449eca632eadf395333a47a81b0dfa417cc2e8b4bad2bebf64ed70ef4b04ea50e62b176a1ace2824d2264628035aaacc5655572cd203ea5f488ab46e3b73fba5c5b279d692b3e25b0d9c13796ee1e52ed554eabfebc47ef044a5d32fe2d39084559a7faffce9ef39998d" />
diff --git a/tests/Prometheus.Client.HealthChecks.Tests.csproj b/tests/Prometheus.Client.HealthChecks.Tests.csproj
index f5b21c4..b789383 100644
--- a/tests/Prometheus.Client.HealthChecks.Tests.csproj
+++ b/tests/Prometheus.Client.HealthChecks.Tests.csproj
@@ -1,38 +1,17 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <!-- netcoreapp2.1 => netstandard2.0 -->
-    <!-- netcoreapp3.1 => netstandard2.1 -->
-    <TargetFrameworks>netcoreapp2.1;netcoreapp3.1;net5.0;net6.0;net7.0</TargetFrameworks>
+    <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <InvariantGlobalization>true</InvariantGlobalization>
     <NoWarn>$(NoWarn);CS0618</NoWarn>
   </PropertyGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp2.1'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.*" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.*" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.32" />
-  </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.*" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.32" />
-  </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.*" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.2" />
-  </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.1" />
-  </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'net7.0'">
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1" />
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
-  </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="xunit" Version="2.8.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="coverlet.collector" Version="6.0.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
@@ -41,7 +20,9 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit" Version="2.8.1" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+  </ItemGroup>
+  <ItemGroup>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\src\Prometheus.Client.HealthChecks.csproj" />