diff --git a/process/process.go b/process/process.go
index f356b63c2..4082fc95a 100644
--- a/process/process.go
+++ b/process/process.go
@@ -30,8 +30,8 @@ type Process struct {
 	parent         int32
 	parentMutex    sync.RWMutex // for windows ppid cache
 	numCtxSwitches *NumCtxSwitchesStat
-	uids           []int32
-	gids           []int32
+	uids           []uint32
+	gids           []uint32
 	groups         []uint32
 	numThreads     int32
 	memInfo        *MemoryInfoStat
@@ -434,12 +434,12 @@ func (p *Process) Foreground() (bool, error) {
 }
 
 // Uids returns user ids of the process as a slice of the int
-func (p *Process) Uids() ([]int32, error) {
+func (p *Process) Uids() ([]uint32, error) {
 	return p.UidsWithContext(context.Background())
 }
 
 // Gids returns group ids of the process as a slice of the int
-func (p *Process) Gids() ([]int32, error) {
+func (p *Process) Gids() ([]uint32, error) {
 	return p.GidsWithContext(context.Background())
 }
 
diff --git a/process/process_darwin.go b/process/process_darwin.go
index 5e6c51360..5231007c3 100644
--- a/process/process_darwin.go
+++ b/process/process_darwin.go
@@ -117,26 +117,26 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return strings.IndexByte(string(out), '+') != -1, nil
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
 	}
 
 	// See: http://unix.superglobalmegacorp.com/Net2/newsrc/sys/ucred.h.html
-	userEffectiveUID := int32(k.Eproc.Ucred.Uid)
+	userEffectiveUID := uint32(k.Eproc.Ucred.Uid)
 
-	return []int32{userEffectiveUID}, nil
+	return []uint32{userEffectiveUID}, nil
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
 	}
 
-	gids := make([]int32, 0, 3)
-	gids = append(gids, int32(k.Eproc.Pcred.P_rgid), int32(k.Eproc.Pcred.P_rgid), int32(k.Eproc.Pcred.P_svgid))
+	gids := make([]uint32, 0, 3)
+	gids = append(gids, uint32(k.Eproc.Pcred.P_rgid), uint32(k.Eproc.Pcred.P_rgid), uint32(k.Eproc.Pcred.P_svgid))
 
 	return gids, nil
 }
diff --git a/process/process_fallback.go b/process/process_fallback.go
index bd73c3abc..23793e92c 100644
--- a/process/process_fallback.go
+++ b/process/process_fallback.go
@@ -82,11 +82,11 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return false, common.ErrNotImplementedError
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
diff --git a/process/process_freebsd.go b/process/process_freebsd.go
index e4f1b0528..3d21183d6 100644
--- a/process/process_freebsd.go
+++ b/process/process_freebsd.go
@@ -157,27 +157,27 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return strings.IndexByte(string(out), '+') != -1, nil
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
 	}
 
-	uids := make([]int32, 0, 3)
+	uids := make([]uint32, 0, 3)
 
-	uids = append(uids, int32(k.Ruid), int32(k.Uid), int32(k.Svuid))
+	uids = append(uids, uint32(k.Ruid), uint32(k.Uid), uint32(k.Svuid))
 
 	return uids, nil
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
 	}
 
-	gids := make([]int32, 0, 3)
-	gids = append(gids, int32(k.Rgid), int32(k.Ngroups), int32(k.Svgid))
+	gids := make([]uint32, 0, 3)
+	gids = append(gids, uint32(k.Rgid), uint32(k.Ngroups), uint32(k.Svgid))
 
 	return gids, nil
 }
diff --git a/process/process_linux.go b/process/process_linux.go
index 41373accd..2151ed5c8 100644
--- a/process/process_linux.go
+++ b/process/process_linux.go
@@ -148,18 +148,18 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return pgid == tpgid, nil
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	err := p.fillFromStatusWithContext(ctx)
 	if err != nil {
-		return []int32{}, err
+		return []uint32{}, err
 	}
 	return p.uids, nil
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	err := p.fillFromStatusWithContext(ctx)
 	if err != nil {
-		return []int32{}, err
+		return []uint32{}, err
 	}
 	return p.gids, nil
 }
@@ -866,22 +866,22 @@ func (p *Process) fillFromStatusWithContext(ctx context.Context) error {
 			}
 			p.tgid = int32(pval)
 		case "Uid":
-			p.uids = make([]int32, 0, 4)
+			p.uids = make([]uint32, 0, 4)
 			for _, i := range strings.Split(value, "\t") {
 				v, err := strconv.ParseInt(i, 10, 32)
 				if err != nil {
 					return err
 				}
-				p.uids = append(p.uids, int32(v))
+				p.uids = append(p.uids, uint32(v))
 			}
 		case "Gid":
-			p.gids = make([]int32, 0, 4)
+			p.gids = make([]uint32, 0, 4)
 			for _, i := range strings.Split(value, "\t") {
 				v, err := strconv.ParseInt(i, 10, 32)
 				if err != nil {
 					return err
 				}
-				p.gids = append(p.gids, int32(v))
+				p.gids = append(p.gids, uint32(v))
 			}
 		case "Groups":
 			groups := strings.Fields(value)
diff --git a/process/process_openbsd.go b/process/process_openbsd.go
index 4af745b12..7cd8ca736 100644
--- a/process/process_openbsd.go
+++ b/process/process_openbsd.go
@@ -171,27 +171,27 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return strings.IndexByte(string(out), '+') != -1, nil
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
 	}
 
-	uids := make([]int32, 0, 3)
+	uids := make([]uint32, 0, 3)
 
-	uids = append(uids, int32(k.Ruid), int32(k.Uid), int32(k.Svuid))
+	uids = append(uids, uint32(k.Ruid), uint32(k.Uid), uint32(k.Svuid))
 
 	return uids, nil
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	k, err := p.getKProc()
 	if err != nil {
 		return nil, err
 	}
 
-	gids := make([]int32, 0, 3)
-	gids = append(gids, int32(k.Rgid), int32(k.Ngroups), int32(k.Svgid))
+	gids := make([]uint32, 0, 3)
+	gids = append(gids, uint32(k.Rgid), uint32(k.Ngroups), uint32(k.Svgid))
 
 	return gids, nil
 }
@@ -202,9 +202,9 @@ func (p *Process) GroupsWithContext(ctx context.Context) ([]uint32, error) {
 		return nil, err
 	}
 
-	groups := make([]int32, k.Ngroups)
+	groups := make([]uint32, k.Ngroups)
 	for i := int16(0); i < k.Ngroups; i++ {
-		groups[i] = int32(k.Groups[i])
+		groups[i] = uint32(k.Groups[i])
 	}
 
 	return groups, nil
diff --git a/process/process_plan9.go b/process/process_plan9.go
index e1705c672..726758cae 100644
--- a/process/process_plan9.go
+++ b/process/process_plan9.go
@@ -82,11 +82,11 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return false, common.ErrNotImplementedError
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
diff --git a/process/process_solaris.go b/process/process_solaris.go
index 1eba11252..04f86f16b 100644
--- a/process/process_solaris.go
+++ b/process/process_solaris.go
@@ -96,11 +96,11 @@ func (p *Process) ForegroundWithContext(ctx context.Context) (bool, error) {
 	return false, common.ErrNotImplementedError
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
diff --git a/process/process_windows.go b/process/process_windows.go
index dbac462c3..f3111649a 100644
--- a/process/process_windows.go
+++ b/process/process_windows.go
@@ -466,11 +466,11 @@ func (p *Process) UsernameWithContext(ctx context.Context) (string, error) {
 	return domain + "\\" + user, err
 }
 
-func (p *Process) UidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) UidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }
 
-func (p *Process) GidsWithContext(ctx context.Context) ([]int32, error) {
+func (p *Process) GidsWithContext(ctx context.Context) ([]uint32, error) {
 	return nil, common.ErrNotImplementedError
 }