diff --git a/src/BenchmarkDotNet/BenchmarkDotNet.csproj b/src/BenchmarkDotNet/BenchmarkDotNet.csproj
index dbdc9449a4..c548365ebb 100644
--- a/src/BenchmarkDotNet/BenchmarkDotNet.csproj
+++ b/src/BenchmarkDotNet/BenchmarkDotNet.csproj
@@ -24,6 +24,9 @@
     <PackageReference Include="Perfolizer" Version="0.2.1" />
     <PackageReference Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="3.0.2" PrivateAssets="contentfiles;analyzers" />
     <PackageReference Include="Microsoft.DotNet.PlatformAbstractions" Version="3.1.6" />
+    <!-- Do not update these packages, or else netcoreapp3.0 and older will no longer work -->
+    <PackageReference Include="System.Management" Version="5.0.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.1.0" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
@@ -31,12 +34,6 @@
     <PackageReference Include="System.Reflection.Emit" Version="4.7.0" />
     <PackageReference Include="System.Reflection.Emit.Lightweight" Version="4.7.0" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
-    <PackageReference Include="System.Management" Version="5.0.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.2.0" />
-  </ItemGroup>
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
-    <PackageReference Include="System.Management" Version="6.0.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.5.0" />
   </ItemGroup>
   <ItemGroup Condition="'$(OS)' == 'Windows_NT' AND '$(UseMonoRuntime)' != 'true' ">
     <ProjectReference Include="..\BenchmarkDotNet.Disassembler.x64\BenchmarkDotNet.Disassembler.x64.csproj">
diff --git a/tests/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly.csproj b/tests/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly.csproj
index e559ace0a9..70ca871259 100644
--- a/tests/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly.csproj
+++ b/tests/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly/BenchmarkDotNet.IntegrationTests.ConfigPerAssembly.csproj
@@ -14,7 +14,7 @@
     <ProjectReference Include="..\..\src\BenchmarkDotNet\BenchmarkDotNet.csproj" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <Reference Include="System.Runtime" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/tests/BenchmarkDotNet.IntegrationTests.CustomPaths/BenchmarkDotNet.IntegrationTests.CustomPaths.csproj b/tests/BenchmarkDotNet.IntegrationTests.CustomPaths/BenchmarkDotNet.IntegrationTests.CustomPaths.csproj
index 95eb54181b..cb4df7361e 100644
--- a/tests/BenchmarkDotNet.IntegrationTests.CustomPaths/BenchmarkDotNet.IntegrationTests.CustomPaths.csproj
+++ b/tests/BenchmarkDotNet.IntegrationTests.CustomPaths/BenchmarkDotNet.IntegrationTests.CustomPaths.csproj
@@ -14,7 +14,7 @@
     <ProjectReference Include="..\..\src\BenchmarkDotNet\BenchmarkDotNet.csproj" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <Reference Include="System.Runtime" />
   </ItemGroup>
 
diff --git a/tests/BenchmarkDotNet.IntegrationTests.DisabledOptimizations/BenchmarkDotNet.IntegrationTests.DisabledOptimizations.csproj b/tests/BenchmarkDotNet.IntegrationTests.DisabledOptimizations/BenchmarkDotNet.IntegrationTests.DisabledOptimizations.csproj
index 15723e07e5..aad9d6ac33 100644
--- a/tests/BenchmarkDotNet.IntegrationTests.DisabledOptimizations/BenchmarkDotNet.IntegrationTests.DisabledOptimizations.csproj
+++ b/tests/BenchmarkDotNet.IntegrationTests.DisabledOptimizations/BenchmarkDotNet.IntegrationTests.DisabledOptimizations.csproj
@@ -16,7 +16,7 @@
     <ProjectReference Include="..\..\src\BenchmarkDotNet\BenchmarkDotNet.csproj" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <Reference Include="System.Runtime" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/tests/BenchmarkDotNet.IntegrationTests.EnabledOptimizations/BenchmarkDotNet.IntegrationTests.EnabledOptimizations.csproj b/tests/BenchmarkDotNet.IntegrationTests.EnabledOptimizations/BenchmarkDotNet.IntegrationTests.EnabledOptimizations.csproj
index 593dbbae16..da7558c82e 100644
--- a/tests/BenchmarkDotNet.IntegrationTests.EnabledOptimizations/BenchmarkDotNet.IntegrationTests.EnabledOptimizations.csproj
+++ b/tests/BenchmarkDotNet.IntegrationTests.EnabledOptimizations/BenchmarkDotNet.IntegrationTests.EnabledOptimizations.csproj
@@ -16,7 +16,7 @@
     <ProjectReference Include="..\..\src\BenchmarkDotNet\BenchmarkDotNet.csproj" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <Reference Include="System.Runtime" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/tests/BenchmarkDotNet.IntegrationTests.Static/BenchmarkDotNet.IntegrationTests.Static.csproj b/tests/BenchmarkDotNet.IntegrationTests.Static/BenchmarkDotNet.IntegrationTests.Static.csproj
index 8ff856ecb5..4a52743deb 100644
--- a/tests/BenchmarkDotNet.IntegrationTests.Static/BenchmarkDotNet.IntegrationTests.Static.csproj
+++ b/tests/BenchmarkDotNet.IntegrationTests.Static/BenchmarkDotNet.IntegrationTests.Static.csproj
@@ -14,7 +14,7 @@
     <ProjectReference Include="..\..\src\BenchmarkDotNet\BenchmarkDotNet.csproj" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <Reference Include="System.Runtime" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/tests/BenchmarkDotNet.IntegrationTests/BenchmarkDotNet.IntegrationTests.csproj b/tests/BenchmarkDotNet.IntegrationTests/BenchmarkDotNet.IntegrationTests.csproj
index 5bc42e3dff..5d70626536 100644
--- a/tests/BenchmarkDotNet.IntegrationTests/BenchmarkDotNet.IntegrationTests.csproj
+++ b/tests/BenchmarkDotNet.IntegrationTests/BenchmarkDotNet.IntegrationTests.csproj
@@ -46,7 +46,7 @@
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
     <ProjectReference Include="..\..\src\BenchmarkDotNet.Diagnostics.Windows\BenchmarkDotNet.Diagnostics.Windows.csproj" />
     <ProjectReference Include="..\BenchmarkDotNet.IntegrationTests.CustomPaths\BenchmarkDotNet.IntegrationTests.CustomPaths.csproj" />
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Runtime" />
diff --git a/tests/BenchmarkDotNet.Tests/BenchmarkDotNet.Tests.csproj b/tests/BenchmarkDotNet.Tests/BenchmarkDotNet.Tests.csproj
index eda55784ad..02e5169197 100755
--- a/tests/BenchmarkDotNet.Tests/BenchmarkDotNet.Tests.csproj
+++ b/tests/BenchmarkDotNet.Tests/BenchmarkDotNet.Tests.csproj
@@ -25,7 +25,7 @@
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' ">
     <ProjectReference Include="..\..\src\BenchmarkDotNet.Diagnostics.Windows\BenchmarkDotNet.Diagnostics.Windows.csproj" />
-    <PackageReference Include="Microsoft.NETCore.Platforms" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NETCore.Platforms" Version="5.0.0" />
     <PackageReference Include="System.Memory" Version="4.5.5" />
     <Reference Include="System.Runtime" />
     <Reference Include="System.Threading.Tasks" />