diff --git a/Mono.Debugger.Soft/Mono.Debugger.Soft.csproj b/Mono.Debugger.Soft/Mono.Debugger.Soft.csproj
index c0262ed0..20a64855 100644
--- a/Mono.Debugger.Soft/Mono.Debugger.Soft.csproj
+++ b/Mono.Debugger.Soft/Mono.Debugger.Soft.csproj
@@ -26,8 +26,8 @@
 
   <ItemGroup>
     <PackageReference Include="Mono.Cecil" Version="$(NuGetVersionCecil)" PrivateAssets="all" />
-    <PackageReference Include="System.Runtime" Version="4.3.1" />
-    <PackageReference Include="System.Reflection.Metadata" Version="5.0" />
+    <PackageReference Include="System.Runtime" Version="4.3.1" Condition=" '$(TargetFramework)' == 'net472' " />
+    <PackageReference Include="System.Reflection.Metadata" Version="5.0" Condition=" '$(TargetFramework)' == 'net472' " />
     <PackageReference Include="Microsoft.SymbolStore" Version="1.0.411401" />
     <PackageReference Include="Microsoft.FileFormats" Version="1.0.411401" />
   </ItemGroup>
diff --git a/Mono.Debugging/Mono.Debugging.csproj b/Mono.Debugging/Mono.Debugging.csproj
index 9c28e123..1f9d4deb 100644
--- a/Mono.Debugging/Mono.Debugging.csproj
+++ b/Mono.Debugging/Mono.Debugging.csproj
@@ -23,8 +23,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Buffers" Version="$(SystemBuffersVersion)" />
-    <PackageReference Include="System.Collections.Immutable" Version="$(NuGetVersionSystemCollectionsImmutable)" />
+    <PackageReference Include="System.Buffers" Version="$(SystemBuffersVersion)" Condition=" '$(TargetFramework)' == 'net472' " />
+    <PackageReference Include="System.Collections.Immutable" Version="$(NuGetVersionSystemCollectionsImmutable)" Condition=" '$(TargetFramework)' == 'net472' " />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(NuGetVersionRoslyn)" />
   </ItemGroup>