diff --git a/go.mod b/go.mod
index 8b02fed..6804feb 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module github.com/s0rg/fantasyname
 
-go 1.20
+go 1.21.4
 
-require golang.org/x/text v0.11.0
+require golang.org/x/text v0.14.0
diff --git a/go.sum b/go.sum
index 5f53cd0..c9c7c64 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
-golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
diff --git a/parser.go b/parser.go
index 0b47376..6083f3c 100644
--- a/parser.go
+++ b/parser.go
@@ -33,13 +33,20 @@ func newParser(opts ...Option) (p *parser) {
 
 	p = &parser{conf: c}
 
-	p.stack.Push(state{rndfn: p.conf.RandIntN}) // "root" state
+	// "root" state
+	p.stack.Push(&state{
+		rand: p.conf.RandIntN,
+	})
 
 	return p
 }
 
 func (p *parser) OnGroupStart(isLiteral bool) {
-	p.stack.Push(state{IsGroup: true, IsLiteral: isLiteral, rndfn: p.conf.RandIntN})
+	p.stack.Push(&state{
+		IsGroup:   true,
+		IsLiteral: isLiteral,
+		rand:      p.conf.RandIntN,
+	})
 }
 
 func (p *parser) OnGroupEnd(isLiteral bool) (err error) {
diff --git a/state.go b/state.go
index 8a92d88..c43655c 100644
--- a/state.go
+++ b/state.go
@@ -9,7 +9,7 @@ import (
 type wrapper func(fmt.Stringer) fmt.Stringer
 
 type state struct {
-	rndfn     func(int) int
+	rand      func(int) int
 	items     []fmt.Stringer
 	wrappers  []wrapper
 	splitpos  int
@@ -19,7 +19,7 @@ type state struct {
 
 func (s *state) Add(v fmt.Stringer) {
 	if !s.IsGroup {
-		v = s.withWrappers(v)
+		v = s.applyWrappers(v)
 	}
 
 	s.items = append(s.items, v)
@@ -60,15 +60,15 @@ func (s *state) Stringer() (rv fmt.Stringer) {
 	case len(s.items) == 1:
 		rv = s.items[0]
 	case s.IsGroup:
-		rv = stringers.MakeRandom(s.items, s.rndfn)
+		rv = stringers.MakeRandom(s.items, s.rand)
 	default:
 		rv = stringers.Sequence(s.items)
 	}
 
-	return s.withWrappers(rv)
+	return s.applyWrappers(rv)
 }
 
-func (s *state) withWrappers(v fmt.Stringer) (rv fmt.Stringer) {
+func (s *state) applyWrappers(v fmt.Stringer) (rv fmt.Stringer) {
 	rv = v
 
 	if len(s.wrappers) > 0 {
diff --git a/state_test.go b/state_test.go
index 4f972e1..254ab14 100644
--- a/state_test.go
+++ b/state_test.go
@@ -50,7 +50,7 @@ func TestStateLiteralWrap(t *testing.T) {
 func TestStateLiteralGroupSplitNotEmpty(t *testing.T) {
 	t.Parallel()
 
-	s := state{IsGroup: true, IsLiteral: true, rndfn: rand.Intn}
+	s := state{IsGroup: true, IsLiteral: true, rand: rand.Intn}
 	s.Add(stringers.Literal("a"))
 	s.Add(stringers.Literal("c"))
 	s.Split()
@@ -70,7 +70,7 @@ func TestStateLiteralGroupSplitNotEmpty(t *testing.T) {
 func TestStateLiteralGroupSplitEmpty(t *testing.T) {
 	t.Parallel()
 
-	s := state{IsGroup: true, IsLiteral: true, rndfn: rand.Intn}
+	s := state{IsGroup: true, IsLiteral: true, rand: rand.Intn}
 	s.Split()
 	s.Add(stringers.Literal("a"))
 	s.Split()
diff --git a/statestack.go b/statestack.go
index 31d8922..9f26122 100644
--- a/statestack.go
+++ b/statestack.go
@@ -1,12 +1,12 @@
 package fantasyname
 
-type statestack []state
+type statestack []*state
 
-func (ss *statestack) Push(s state) {
+func (ss *statestack) Push(s *state) {
 	*ss = append(*ss, s)
 }
 
-func (ss *statestack) Pop() (rv state, ok bool) {
+func (ss *statestack) Pop() (rv *state, ok bool) {
 	sp := *ss
 
 	if n := len(sp); n > 0 {
@@ -21,7 +21,7 @@ func (ss *statestack) Top() (rv *state, ok bool) {
 	sp := *ss
 
 	if n := len(sp); n > 0 {
-		rv, ok = &sp[n-1], true
+		rv, ok = sp[n-1], true
 	}
 
 	return
diff --git a/statestack_test.go b/statestack_test.go
index 8f10c52..908dfc8 100644
--- a/statestack_test.go
+++ b/statestack_test.go
@@ -25,7 +25,7 @@ func TestStateStackPushPop(t *testing.T) {
 
 	stack := statestack{}
 
-	stack.Push(state{IsLiteral: true})
+	stack.Push(&state{IsLiteral: true})
 
 	if len(stack) != 1 {
 		t.Error("unexpected len")