diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index 5ceb5909..8de7af63 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6
       - name: Install Go
-        uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
+        uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v5.0.1
         with:
           go-version: 1.22.x
       - name: Install snmp_exporter/generator dependencies
diff --git a/go.mod b/go.mod
index 6e9fd6f7..8b7c4f47 100644
--- a/go.mod
+++ b/go.mod
@@ -5,5 +5,5 @@ go 1.20
 require (
 	github.com/google/go-cmp v0.6.0
 	golang.org/x/sync v0.7.0
-	golang.org/x/sys v0.20.0
+	golang.org/x/sys v0.21.0
 )
diff --git a/go.sum b/go.sum
index cc15e2fb..535a646e 100644
--- a/go.sum
+++ b/go.sum
@@ -2,5 +2,5 @@ github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
diff --git a/proc_status.go b/proc_status.go
index a055197c..dd8aa568 100644
--- a/proc_status.go
+++ b/proc_status.go
@@ -146,7 +146,11 @@ func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintByt
 			}
 		}
 	case "NSpid":
-		s.NSpids = calcNSPidsList(vString)
+		nspids, err := calcNSPidsList(vString)
+		if err != nil {
+			return err
+		}
+		s.NSpids = nspids
 	case "VmPeak":
 		s.VmPeak = vUintBytes
 	case "VmSize":
@@ -222,17 +226,17 @@ func calcCpusAllowedList(cpuString string) []uint64 {
 	return g
 }
 
-func calcNSPidsList(nspidsString string) []uint64 {
-	s := strings.Split(nspidsString, " ")
+func calcNSPidsList(nspidsString string) ([]uint64, error) {
+	s := strings.Split(nspidsString, "\t")
 	var nspids []uint64
 
 	for _, nspid := range s {
-		nspid, _ := strconv.ParseUint(nspid, 10, 64)
-		if nspid == 0 {
-			continue
+		nspid, err := strconv.ParseUint(nspid, 10, 64)
+		if err != nil {
+			return nil, err
 		}
 		nspids = append(nspids, nspid)
 	}
 
-	return nspids
+	return nspids, nil
 }
diff --git a/proc_status_test.go b/proc_status_test.go
index 9644bf01..e41d36ba 100644
--- a/proc_status_test.go
+++ b/proc_status_test.go
@@ -139,3 +139,19 @@ func TestCpusAllowedList(t *testing.T) {
 		t.Errorf("want CpusAllowedList %v, have %v", want, have)
 	}
 }
+
+func TestNsPids(t *testing.T) {
+	p, err := getProcFixtures(t).Proc(26235)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := p.NewStatus()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, have := []uint64{26235, 1}, s.NSpids; !reflect.DeepEqual(want, have) {
+		t.Errorf("want NsPids %v, have %v", want, have)
+	}
+}
diff --git a/testdata/fixtures.ttar b/testdata/fixtures.ttar
index 4bc508b8..f2bd5e56 100644
--- a/testdata/fixtures.ttar
+++ b/testdata/fixtures.ttar
@@ -818,10 +818,10 @@ Uid:	0	0	0	0
 Gid:	0	0	0	0
 FDSize: 64
 Groups:
-NStgid: 26235   1
-NSpid:  26235   1
-NSpgid: 26235   1
-NSsid:  26235   1
+NStgid: 26235	1
+NSpid:  26235	1
+NSpgid: 26235	1
+NSsid:  26235	1
 VmPeak:   758200 kB
 VmSize:   758200 kB
 VmLck:         0 kB