diff --git a/src/libraries/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props b/src/libraries/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
index c5cf15fa7356c5..b227bfc1ff3ff0 100644
--- a/src/libraries/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
+++ b/src/libraries/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
@@ -6,6 +6,9 @@
     <BuildRID Include="linux-arm64">
       <Platform>arm64</Platform>
     </BuildRID>
+    <BuildRID Include="linux-s390x">
+      <Platform>s390x</Platform>
+    </BuildRID>
     <BuildRID Include="linux-x64" />
     <BuildRID Include="osx-x64" />
   </ItemGroup>
diff --git a/src/libraries/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj b/src/libraries/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
index b7b43e933dfd89..4cddbb71d9ad9d 100644
--- a/src/libraries/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
+++ b/src/libraries/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
@@ -4,7 +4,7 @@
     <SkipPackageFileCheck>true</SkipPackageFileCheck>
     <SkipValidatePackage>true</SkipValidatePackage>
   </PropertyGroup>
-  <ItemGroup Condition="'$(PackageTargetRuntime)' == 'linux-arm' or '$(PackageTargetRuntime)' == 'linux-arm64' or '$(PackageTargetRuntime)' == 'linux-x64' or '$(PackageTargetRuntime)' == 'osx-x64' or '$(PackageTargetRuntime)' == 'freebsd-x64'">
+  <ItemGroup Condition="'$(PackageTargetRuntime)' == 'linux-arm' or '$(PackageTargetRuntime)' == 'linux-arm64' or '$(PackageTargetRuntime)' == 'linux-s390x' or '$(PackageTargetRuntime)' == 'linux-x64' or '$(PackageTargetRuntime)' == 'osx-x64' or '$(PackageTargetRuntime)' == 'freebsd-x64'">
     <File Include="$(NativeBinDir)$(LibPrefix)System.IO.Ports.Native$(LibSuffix)" >
       <TargetPath>runtimes/$(OutputRid)/native</TargetPath>
     </File>