diff --git a/src/System.Management.Automation/CoreCLR/CorePsPlatform.cs b/src/System.Management.Automation/CoreCLR/CorePsPlatform.cs
index 8d9035f241b..fc168eca14b 100644
--- a/src/System.Management.Automation/CoreCLR/CorePsPlatform.cs
+++ b/src/System.Management.Automation/CoreCLR/CorePsPlatform.cs
@@ -588,6 +588,16 @@ internal static int NonWindowsGetProcessParentPid(int pid)
             return IsMacOS ? Unix.NativeMethods.GetPPid(pid) : Unix.GetProcFSParentPid(pid);
         }
 
+        internal static bool NonWindowsKillProcess(int pid)
+        {
+            return Unix.NativeMethods.KillProcess(pid);
+        }
+
+        internal static int NonWindowsWaitPid(int pid, bool nohang)
+        {
+            return Unix.NativeMethods.WaitPid(pid, nohang);
+        }
+
         internal static class Windows
         {
             /// <summary>The native methods class.</summary>
@@ -1063,6 +1073,13 @@ internal static class NativeMethods
                 [DllImport(psLib, CharSet = CharSet.Ansi)]
                 internal static extern uint GetCurrentThreadId();
 
+                [DllImport(psLib)]
+                [return: MarshalAs(UnmanagedType.Bool)]
+                internal static extern bool KillProcess(int pid);
+
+                [DllImport(psLib)]
+                internal static extern int WaitPid(int pid, bool nohang);
+
                 // This is a struct tm from <time.h>.
                 [StructLayout(LayoutKind.Sequential)]
                 internal unsafe struct UnixTm
diff --git a/src/System.Management.Automation/System.Management.Automation.csproj b/src/System.Management.Automation/System.Management.Automation.csproj
index 3f317b802a3..9f293b76697 100644
--- a/src/System.Management.Automation/System.Management.Automation.csproj
+++ b/src/System.Management.Automation/System.Management.Automation.csproj
@@ -28,7 +28,7 @@
     <PackageReference Include="System.Text.Encoding.CodePages" Version="6.0.0-preview.3.21201.4" />
     <!-- the following package(s) are from the powershell org -->
     <PackageReference Include="Microsoft.Management.Infrastructure" Version="2.0.0" />
-    <PackageReference Include="Microsoft.PowerShell.Native" Version="7.2.0-preview.1" />
+    <PackageReference Include="Microsoft.PowerShell.Native" Version="7.2.0-preview.2" />
   </ItemGroup>
 
   <PropertyGroup>
diff --git a/src/System.Management.Automation/engine/remoting/common/RunspaceConnectionInfo.cs b/src/System.Management.Automation/engine/remoting/common/RunspaceConnectionInfo.cs
index a16e7820bd1..04ce777964e 100644
--- a/src/System.Management.Automation/engine/remoting/common/RunspaceConnectionInfo.cs
+++ b/src/System.Management.Automation/engine/remoting/common/RunspaceConnectionInfo.cs
@@ -2227,6 +2227,11 @@ internal int StartSSHProcess(
             return StartSSHProcessImpl(startInfo, out stdInWriterVar, out stdOutReaderVar, out stdErrReaderVar);
         }
 
+        internal void KillSSHProcess(int pid)
+        {
+            KillSSHProcessImpl(pid);
+        }
+
         #endregion
 
         #region SSH Process Creation
@@ -2265,6 +2270,16 @@ private static int StartSSHProcessImpl(
             return pid;
         }
 
+        private static void KillSSHProcessImpl(int pid)
+        {
+            // killing a zombie might or might not return ESRCH, so we ignore kill's return value
+            Platform.NonWindowsKillProcess(pid);
+
+            // block while waiting for process to die
+            // shouldn't take long after SIGKILL
+            Platform.NonWindowsWaitPid(pid, false);
+        }
+
         #region UNIX Create Process
 
         //
@@ -2570,6 +2585,17 @@ private static int StartSSHProcessImpl(
             return sshProcess.Id;
         }
 
+        private static void KillSSHProcessImpl(int pid)
+        {
+            using (var sshProcess = System.Diagnostics.Process.GetProcessById(pid))
+            {
+                if ((sshProcess != null) && (sshProcess.Handle != IntPtr.Zero) && !sshProcess.HasExited)
+                {
+                    sshProcess.Kill();
+                }
+            }
+        }
+
         // Process creation flags
         private const int CREATE_NEW_PROCESS_GROUP = 0x00000200;
         private const int CREATE_SUSPENDED = 0x00000004;
diff --git a/src/System.Management.Automation/engine/remoting/fanin/OutOfProcTransportManager.cs b/src/System.Management.Automation/engine/remoting/fanin/OutOfProcTransportManager.cs
index ff206938879..2d92e520167 100644
--- a/src/System.Management.Automation/engine/remoting/fanin/OutOfProcTransportManager.cs
+++ b/src/System.Management.Automation/engine/remoting/fanin/OutOfProcTransportManager.cs
@@ -1735,13 +1735,7 @@ private void CloseConnection()
             {
                 try
                 {
-                    using (var sshProcess = System.Diagnostics.Process.GetProcessById(sshProcessId))
-                    {
-                        if ((sshProcess != null) && (sshProcess.Handle != IntPtr.Zero) && !sshProcess.HasExited)
-                        {
-                            sshProcess.Kill();
-                        }
-                    }
+                    _connectionInfo.KillSSHProcess(sshProcessId);
                 }
                 catch (ArgumentException) { }
                 catch (InvalidOperationException) { }