diff --git a/src/encoding/json/v2/arshal.go b/src/encoding/json/v2/arshal.go
index 573d26567f3..e26f3340ee2 100644
--- a/src/encoding/json/v2/arshal.go
+++ b/src/encoding/json/v2/arshal.go
@@ -11,8 +11,6 @@ import (
 	"encoding"
 	"io"
 	"reflect"
-	"slices"
-	"strings"
 	"sync"
 	"time"
 
@@ -575,7 +573,3 @@ func putStrings(s *stringSlice) {
 	}
 	stringsPools.Put(s)
 }
-
-func (ss *stringSlice) Sort() {
-	slices.SortFunc(*ss, func(x, y string) int { return strings.Compare(x, y) })
-}
diff --git a/src/encoding/json/v2/arshal_any.go b/src/encoding/json/v2/arshal_any.go
index 97a77e92376..8c0c445404d 100644
--- a/src/encoding/json/v2/arshal_any.go
+++ b/src/encoding/json/v2/arshal_any.go
@@ -10,6 +10,7 @@ import (
 	"cmp"
 	"math"
 	"reflect"
+	"slices"
 	"strconv"
 
 	"encoding/json/internal"
@@ -153,7 +154,7 @@ func marshalObjectAny(enc *jsontext.Encoder, obj map[string]any, mo *jsonopts.St
 			(*names)[i] = name
 			i++
 		}
-		names.Sort()
+		slices.Sort(*names)
 		for _, name := range *names {
 			if err := enc.WriteToken(jsontext.String(name)); err != nil {
 				return err
diff --git a/src/encoding/json/v2/arshal_default.go b/src/encoding/json/v2/arshal_default.go
index 078d345e143..33931af17e6 100644
--- a/src/encoding/json/v2/arshal_default.go
+++ b/src/encoding/json/v2/arshal_default.go
@@ -843,7 +843,7 @@ func makeMapArshaler(t reflect.Type) *arshaler {
 					k.SetIterKey(iter)
 					(*names)[i] = k.String()
 				}
-				names.Sort()
+				slices.Sort(*names)
 				for _, name := range *names {
 					if err := enc.WriteToken(jsontext.String(name)); err != nil {
 						return err
diff --git a/src/encoding/json/v2/arshal_inlined.go b/src/encoding/json/v2/arshal_inlined.go
index d911bfa1c04..03e563a0c09 100644
--- a/src/encoding/json/v2/arshal_inlined.go
+++ b/src/encoding/json/v2/arshal_inlined.go
@@ -11,6 +11,7 @@ import (
 	"errors"
 	"io"
 	"reflect"
+	"slices"
 
 	"encoding/json/internal/jsonflags"
 	"encoding/json/internal/jsonopts"
@@ -146,7 +147,7 @@ func marshalInlinedFallbackAll(enc *jsontext.Encoder, va addressableValue, mo *j
 				mk.SetIterKey(iter)
 				(*names)[i] = mk.String()
 			}
-			names.Sort()
+			slices.Sort(*names)
 			for _, name := range *names {
 				mk.SetString(name)
 				if err := marshalKey(mk); err != nil {