diff --git a/proc_status.go b/proc_status.go
index c055d075..58c78cd1 100644
--- a/proc_status.go
+++ b/proc_status.go
@@ -32,6 +32,8 @@ type ProcStatus struct {
 
 	// Thread group ID.
 	TGID int
+	// Pid namespace.
+	NSpid int
 
 	// Peak virtual memory size.
 	VmPeak uint64 // nolint:revive
@@ -127,6 +129,8 @@ func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintByt
 		copy(s.UIDs[:], strings.Split(vString, "\t"))
 	case "Gid":
 		copy(s.GIDs[:], strings.Split(vString, "\t"))
+	case "NSpid":
+		s.NSpid = int(vUint)
 	case "VmPeak":
 		s.VmPeak = vUintBytes
 	case "VmSize":
diff --git a/proc_status_test.go b/proc_status_test.go
index 2f0884ff..383c1653 100644
--- a/proc_status_test.go
+++ b/proc_status_test.go
@@ -36,6 +36,7 @@ func TestProcStatus(t *testing.T) {
 	}{
 		{name: "Pid", want: 26231, have: s.PID},
 		{name: "Tgid", want: 26231, have: s.TGID},
+		{name: "NSpid", want: 1, have: s.NSpid},
 		{name: "VmPeak", want: 58472 * 1024, have: int(s.VmPeak)},
 		{name: "VmSize", want: 58440 * 1024, have: int(s.VmSize)},
 		{name: "VmLck", want: 0 * 1024, have: int(s.VmLck)},