diff --git a/Sources/CShim/exec_command.c b/Sources/CShim/exec_command.c
index cbb35b3d..667ebece 100644
--- a/Sources/CShim/exec_command.c
+++ b/Sources/CShim/exec_command.c
@@ -32,6 +32,9 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
+#if defined(__linux__)
+#include <sys/prctl.h>
+#endif
 
 #include "exec_command.h"
 
@@ -98,6 +101,7 @@ void exec_command_attrs_init(struct exec_command_attrs *attrs) {
   attrs->mask = 0;
   attrs->uid = -1;
   attrs->gid = -1;
+  attrs->pdeathSignal = 0;
 }
 
 static void child_handler(const int sync_pipes[2], const char *executable,
@@ -253,6 +257,15 @@ static void child_handler(const int sync_pipes[2], const char *executable,
     }
   }
 
+#if defined(__linux__)
+  // Set parent death signal if specified
+  if (attrs.pdeathSignal != 0) {
+    if (prctl(PR_SET_PDEATHSIG, attrs.pdeathSignal) != 0) {
+      goto fail;
+    }
+  }
+#endif
+
   // close exec everything outside of our child's fd_table.
   if (cloexec_from(file_handle_count) != 0) {
     goto fail;
diff --git a/Sources/CShim/include/exec_command.h b/Sources/CShim/include/exec_command.h
index 89919cd5..4a54879f 100644
--- a/Sources/CShim/include/exec_command.h
+++ b/Sources/CShim/include/exec_command.h
@@ -38,6 +38,8 @@ struct exec_command_attrs {
   gid_t gid;
   /// signal mask for the child process
   int mask;
+  /// parent death signal (Linux only, 0 to disable)
+  int pdeathSignal;
 };
 
 void exec_command_attrs_init(struct exec_command_attrs *attrs);
diff --git a/Sources/ContainerizationOS/Command.swift b/Sources/ContainerizationOS/Command.swift
index 77c8c166..cb6f7f5a 100644
--- a/Sources/ContainerizationOS/Command.swift
+++ b/Sources/ContainerizationOS/Command.swift
@@ -68,6 +68,8 @@ public struct Command: Sendable {
         public var uid: UInt32?
         /// Set the process group ID.
         public var gid: UInt32?
+        /// Signal to send when parent process dies (Linux only).
+        public var pdeathSignal: Int32?
 
         public init(
             setPGroup: Bool = false,
@@ -77,7 +79,8 @@ public struct Command: Sendable {
             setsid: Bool = false,
             setctty: Bool = false,
             uid: UInt32? = nil,
-            gid: UInt32? = nil
+            gid: UInt32? = nil,
+            pdeathSignal: Int32? = nil
         ) {
             self.setPGroup = setPGroup
             self.resetIDs = resetIDs
@@ -87,6 +90,7 @@ public struct Command: Sendable {
             self.setctty = setctty
             self.uid = uid
             self.gid = gid
+            self.pdeathSignal = pdeathSignal
         }
     }
 
@@ -207,6 +211,10 @@ extension Command {
             attrs.gid = gid
         }
 
+        if let pdeathSignal = self.attrs.pdeathSignal {
+            attrs.pdeathSignal = pdeathSignal
+        }
+
         var pid: pid_t = 0
         var argv = ([executable] + arguments).map { strdup($0) } + [nil]
         defer {
diff --git a/vminitd/Sources/vminitd/Runc/Runc.swift b/vminitd/Sources/vminitd/Runc/Runc.swift
index ec7e3fbd..6b582b0f 100644
--- a/vminitd/Sources/vminitd/Runc/Runc.swift
+++ b/vminitd/Sources/vminitd/Runc/Runc.swift
@@ -339,7 +339,9 @@ extension Runc {
         cmd.stdout = stdout ?? outPipe.fileHandleForWriting
         cmd.stderr = stderr ?? outPipe.fileHandleForWriting
 
-        // FIXME: pdeathSignal handling if Command supported it.
+        if let pdeathSignal = pdeathSignal {
+            cmd.attrs.pdeathSignal = pdeathSignal
+        }
 
         if setpgid {
             cmd.attrs.setPGroup = true