diff --git a/chat/message.go b/chat/message.go
index aedf2a2..0f0ff7c 100644
--- a/chat/message.go
+++ b/chat/message.go
@@ -246,7 +246,7 @@ func (m Message) ClearString() string {
 
 	// handle translate
 	if m.Translate != "" {
-		args := make([]interface{}, len(m.With))
+		args := make([]any, len(m.With))
 		for i, v := range m.With {
 			args[i] = v.ClearString()
 		}
@@ -291,7 +291,7 @@ func (m Message) String() string {
 
 	// handle translate
 	if m.Translate != "" {
-		args := make([]interface{}, len(m.With))
+		args := make([]any, len(m.With))
 		for i, v := range m.With {
 			args[i] = v
 		}
diff --git a/nbt/decode.go b/nbt/decode.go
index b63858e..48f59d1 100644
--- a/nbt/decode.go
+++ b/nbt/decode.go
@@ -12,7 +12,7 @@ import (
 
 // Unmarshal decode binary NBT data and fill into v
 // This is a shortcut to `NewDecoder(bytes.NewReader(data)).Decode(v)`.
-func Unmarshal(data []byte, v interface{}) error {
+func Unmarshal(data []byte, v any) error {
 	_, err := NewDecoder(bytes.NewReader(data)).Decode(v)
 	return err
 }
@@ -28,7 +28,7 @@ func Unmarshal(data []byte, v interface{}) error {
 //
 // This method also return tag name of the root tag.
 // In real world, it is often empty, but the API should allow you to get it when ever you want.
-func (d *Decoder) Decode(v interface{}) (string, error) {
+func (d *Decoder) Decode(v any) (string, error) {
 	val := reflect.ValueOf(v)
 	if val.Kind() != reflect.Ptr {
 		return "", errors.New("nbt: non-pointer passed to Decode")
@@ -329,7 +329,7 @@ func (d *Decoder) unmarshal(val reflect.Value, tagType byte) error {
 		default:
 			return errors.New("cannot parse TagList as " + vk.String())
 		case reflect.Interface:
-			buf = reflect.ValueOf(make([]interface{}, listLen))
+			buf = reflect.ValueOf(make([]any, listLen))
 		case reflect.Slice:
 			buf = reflect.MakeSlice(val.Type(), int(listLen), int(listLen))
 		case reflect.Array:
@@ -398,7 +398,7 @@ func (d *Decoder) unmarshal(val reflect.Value, tagType byte) error {
 				val.SetMapIndex(reflect.ValueOf(tn), v.Elem())
 			}
 		case reflect.Interface:
-			buf := make(map[string]interface{})
+			buf := make(map[string]any)
 			for {
 				tt, tn, err := d.readTag()
 				if err != nil {
@@ -407,7 +407,7 @@ func (d *Decoder) unmarshal(val reflect.Value, tagType byte) error {
 				if tt == TagEnd {
 					break
 				}
-				var value interface{}
+				var value any
 				if err = d.unmarshal(reflect.ValueOf(&value).Elem(), tt); err != nil {
 					return fmt.Errorf("fail to decode tag %q: %w", tn, err)
 				}
@@ -467,7 +467,7 @@ func indirect(v reflect.Value, decodingNull bool) (Unmarshaler, encoding.TextUnm
 		}
 
 		// Prevent infinite loop if v is an interface pointing to its own address:
-		//     var v interface{}
+		//     var v any
 		//     v = &v
 		if v.Elem().Kind() == reflect.Interface && v.Elem().Elem() == v {
 			v = v.Elem()
diff --git a/nbt/decode_test.go b/nbt/decode_test.go
index 29ace2d..3d38de7 100644
--- a/nbt/decode_test.go
+++ b/nbt/decode_test.go
@@ -27,8 +27,8 @@ func TestUnmarshal_string(t *testing.T) {
 		t.Errorf("Unmarshal NBT fail: get %q, want %q", Name, "Bananrama")
 	}
 
-	// Unmarshal to interface{}
-	var infName interface{}
+	// Unmarshal to any
+	var infName any
 	if err := Unmarshal(data, &infName); err != nil {
 		t.Fatal(err)
 	}
@@ -210,7 +210,7 @@ func TestDecoder_Decode_bigTest(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	var inf interface{}
+	var inf any
 	r, err = gzip.NewReader(bytes.NewReader(bigTestData[:]))
 	if err != nil {
 		t.Fatal(err)
@@ -313,7 +313,7 @@ func TestDecoder_Decode_LongArray(t *testing.T) {
 	}
 	var (
 		value    []int64
-		infValue interface{}
+		infValue any
 		want     = []int64{1, 2, 3}
 	)
 
@@ -342,7 +342,7 @@ func TestDecoder_Decode_ByteArray(t *testing.T) {
 	}
 	var (
 		value    []byte
-		infValue interface{}
+		infValue any
 		want     = []byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07}
 	)
 
@@ -355,7 +355,7 @@ func TestDecoder_Decode_ByteArray(t *testing.T) {
 	}
 	// t.Log(value)
 
-	// Unmarshal to interface{}
+	// Unmarshal to any
 	if err := Unmarshal(data, &infValue); err != nil {
 		t.Fatal(err)
 	}
diff --git a/nbt/encode.go b/nbt/encode.go
index a27ebfe..e6b02cf 100644
--- a/nbt/encode.go
+++ b/nbt/encode.go
@@ -16,7 +16,7 @@ import (
 // Marshal is the shortcut of NewEncoder().Encode() with empty tag name.
 // Notices that repeatedly init buffers is low efficiency.
 // Using Encoder and Reset the buffer in each time is recommended in that cases.
-func Marshal(v interface{}) ([]byte, error) {
+func Marshal(v any) ([]byte, error) {
 	var buf bytes.Buffer
 	err := NewEncoder(&buf).Encode(v, "")
 	return buf.Bytes(), err
@@ -39,7 +39,7 @@ func NewEncoder(w io.Writer) *Encoder {
 // expect `[]int8`, `[]int32`, `[]int64`, `[]uint8`, `[]uint32` and `[]uint64`,
 // which TagByteArray, TagIntArray and TagLongArray.
 // To force encode them as TagList, add a struct field tag.
-func (e *Encoder) Encode(v interface{}, tagName string) error {
+func (e *Encoder) Encode(v any, tagName string) error {
 	t, val := getTagType(reflect.ValueOf(v))
 	return e.marshal(val, t, tagName)
 }
@@ -242,7 +242,7 @@ func getTagType(v reflect.Value) (byte, reflect.Value) {
 		}
 
 		// Prevent infinite loop if v is an interface pointing to its own address:
-		//     var v interface{}
+		//     var v any
 		//     v = &v
 		if v.Elem().Kind() == reflect.Interface && v.Elem().Elem() == v {
 			v = v.Elem()
diff --git a/nbt/encode_test.go b/nbt/encode_test.go
index 3873753..4aaa732 100644
--- a/nbt/encode_test.go
+++ b/nbt/encode_test.go
@@ -112,12 +112,12 @@ func TestEncoder_Encode_interfaceArray(t *testing.T) {
 
 	tests := []struct {
 		name string
-		args []interface{}
+		args []any
 		want []byte
 	}{
 		{
 			name: "Two element interface array",
-			args: []interface{}{Struct1{3}, Struct2{0.3}},
+			args: []any{Struct1{3}, Struct2{0.3}},
 			want: []byte{
 				TagList, 0x00, 0x00 /*no name*/, TagCompound, 0, 0, 0, 2,
 				// 1st element
@@ -136,7 +136,7 @@ func TestEncoder_Encode_interfaceArray(t *testing.T) {
 			if err != nil {
 				t.Error(err)
 			} else if !bytes.Equal(data, tt.want) {
-				t.Errorf("Marshal([]interface{}) got = % 02x, want % 02x", data, tt.want)
+				t.Errorf("Marshal([]any) got = % 02x, want % 02x", data, tt.want)
 				return
 			}
 		})
@@ -242,7 +242,7 @@ func TestEncoder_Encode_map(t *testing.T) {
 }
 
 func TestEncoder_Encode_interface(t *testing.T) {
-	data := map[string]interface{}{
+	data := map[string]any{
 		"Key":   int32(12),
 		"Value": "Tnze",
 	}
diff --git a/nbt/rawmsg.go b/nbt/rawmsg.go
index 6976e71..6c512d5 100644
--- a/nbt/rawmsg.go
+++ b/nbt/rawmsg.go
@@ -62,7 +62,7 @@ func (m RawMessage) String() string {
 }
 
 // Unmarshal decode the data into v.
-func (m RawMessage) Unmarshal(v interface{}) error {
+func (m RawMessage) Unmarshal(v any) error {
 	d := NewDecoder(bytes.NewReader(m.Data))
 	val := reflect.ValueOf(v)
 	if val.Kind() != reflect.Ptr {
diff --git a/net/packet/packet.go b/net/packet/packet.go
index a0ab2bf..c32ec00 100644
--- a/net/packet/packet.go
+++ b/net/packet/packet.go
@@ -38,7 +38,7 @@ func (p Packet) Scan(fields ...FieldDecoder) error {
 }
 
 var bufPool = sync.Pool{
-	New: func() interface{} {
+	New: func() any {
 		return new(bytes.Buffer)
 	},
 }
diff --git a/net/packet/packet_test.go b/net/packet/packet_test.go
index 5050785..b8a5082 100644
--- a/net/packet/packet_test.go
+++ b/net/packet/packet_test.go
@@ -146,10 +146,10 @@ func ExamplePacket_Scan_joinGame() {
 		PreGamemode    pk.Byte
 		WorldNames     = []pk.Identifier{} // This cannot replace with "var DimensionNames []pk.Identifier" because "nil" has no type information
 		DimensionCodec struct {
-			DimensionType interface{} `nbt:"minecraft:dimension_type"`
-			WorldgenBiome interface{} `nbt:"minecraft:worldgen/biome"`
+			DimensionType any `nbt:"minecraft:dimension_type"`
+			WorldgenBiome any `nbt:"minecraft:worldgen/biome"`
 		}
-		Dimension                 interface{}
+		Dimension                 any
 		WorldName                 pk.Identifier
 		HashedSeed                pk.Long
 		MaxPlayers                pk.VarInt
@@ -181,7 +181,7 @@ func ExampleMarshal_setSlot() {
 		Present   bool
 		ItemID    int
 		ItemCount byte
-		NBT       interface{}
+		NBT       any
 	}{
 		{WindowID: 0, Slot: 5, Present: false},
 		{WindowID: 0, Slot: 5, Present: true, ItemID: 0x01, ItemCount: 1, NBT: pk.Byte(0)},
diff --git a/net/packet/types.go b/net/packet/types.go
index 9032254..34b8764 100644
--- a/net/packet/types.go
+++ b/net/packet/types.go
@@ -467,7 +467,7 @@ func (d *Double) ReadFrom(r io.Reader) (n int64, err error) {
 }
 
 // NBT encode a value as Named Binary Tag
-func NBT(v interface{}, optionalTagName ...string) Field {
+func NBT(v any, optionalTagName ...string) Field {
 	if len(optionalTagName) > 0 {
 		return nbtField{V: v, FieldName: optionalTagName[0]}
 	}
diff --git a/net/packet/util.go b/net/packet/util.go
index e6e2bbb..3c7b1aa 100644
--- a/net/packet/util.go
+++ b/net/packet/util.go
@@ -26,7 +26,7 @@ var (
 //
 // Note that Ary DO read or write the Len. You aren't need to do so by your self.
 type Ary[LEN VarInt | VarLong | Byte | UnsignedByte | Short | UnsignedShort | Int | Long] struct {
-	Ary interface{} // Slice or Pointer of Slice of FieldEncoder, FieldDecoder or both (Field)
+	Ary any // Slice or Pointer of Slice of FieldEncoder, FieldDecoder or both (Field)
 }
 
 func (a Ary[LEN]) WriteTo(w io.Writer) (n int64, err error) {
diff --git a/net/rcon.go b/net/rcon.go
index 9aa68f5..834e94c 100644
--- a/net/rcon.go
+++ b/net/rcon.go
@@ -90,7 +90,7 @@ func (r *RCONConn) ReadPacket() (RequestID, Type int32, Payload string, err erro
 func (r *RCONConn) WritePacket(RequestID, Type int32, Payload string) error {
 	buf := new(bytes.Buffer)
 
-	for _, v := range []interface{}{
+	for _, v := range []any{
 		int32(4 + 4 + len(Payload) + 2), // Length
 		RequestID,                       // Request ID
 		Type,                            // Type
diff --git a/realms/realms.go b/realms/realms.go
index 23b40c5..11ea1aa 100644
--- a/realms/realms.go
+++ b/realms/realms.go
@@ -52,7 +52,7 @@ func New(version, user, astk, uuid string) *Realms {
 	return r
 }
 
-func (r *Realms) get(endpoint string, resp interface{}) error {
+func (r *Realms) get(endpoint string, resp any) error {
 	rawResp, err := r.c.Get(Domain + endpoint)
 	if err != nil {
 		return err
@@ -67,7 +67,7 @@ func (r *Realms) get(endpoint string, resp interface{}) error {
 	return nil
 }
 
-func (r *Realms) post(endpoint string, payload, resp interface{}) error {
+func (r *Realms) post(endpoint string, payload, resp any) error {
 	data, err := json.Marshal(payload)
 	if err != nil {
 		return err
diff --git a/realms/server.go b/realms/server.go
index f794da7..34f43c0 100644
--- a/realms/server.go
+++ b/realms/server.go
@@ -23,7 +23,7 @@ type Server struct {
 	MiniGameID           *int
 	MinigameImage        *string
 	ActiveSlot           int
-	// Slots                interface{}
+	// Slots                any
 	Member bool
 }
 
diff --git a/save/dimension.go b/save/dimension.go
index 995b4aa..4e2c801 100644
--- a/save/dimension.go
+++ b/save/dimension.go
@@ -38,8 +38,8 @@ type WorldGenSettings struct {
 }
 
 type DimensionGenerator struct {
-	Type      string                 `nbt:"type"`
-	Generator map[string]interface{} `nbt:"generator"`
+	Type      string         `nbt:"type"`
+	Generator map[string]any `nbt:"generator"`
 }
 
 var (
@@ -47,7 +47,7 @@ var (
 	DefaultDimensionsGenerators = map[string]DimensionGenerator{
 		"minecraft:overworld": {
 			Type: "minecraft:overworld",
-			Generator: map[string]interface{}{
+			Generator: map[string]any{
 				"type":     "minecraft:noise",
 				"settings": "minecraft:overworld",
 				"biome_source": map[string]string{
@@ -58,7 +58,7 @@ var (
 		},
 		"minecraft:the_end": {
 			Type: "minecraft:the_end",
-			Generator: map[string]interface{}{
+			Generator: map[string]any{
 				"type":     "minecraft:noise",
 				"settings": "minecraft:end",
 				"biome_source": map[string]string{
@@ -68,7 +68,7 @@ var (
 		},
 		"minecraft:the_nether": {
 			Type: "minecraft:the_nether",
-			Generator: map[string]interface{}{
+			Generator: map[string]any{
 				"type":     "minecraft:noise",
 				"settings": "minecraft:nether",
 				"biome_source": map[string]string{
diff --git a/save/level.go b/save/level.go
index c8575c2..0046ff7 100644
--- a/save/level.go
+++ b/save/level.go
@@ -46,7 +46,7 @@ type LevelData struct {
 	LastPlayed             int64
 	LevelName              string
 	MapFeatures            bool
-	Player                 map[string]interface{}
+	Player                 map[string]any
 	Raining                bool  `nbt:"raining"`
 	RainTime               int32 `nbt:"rainTime"`
 	RandomSeed             int64
diff --git a/save/playerdata.go b/save/playerdata.go
index f3a508d..d842bdc 100644
--- a/save/playerdata.go
+++ b/save/playerdata.go
@@ -72,8 +72,8 @@ type PlayerData struct {
 type Item struct {
 	Count byte
 	Slot  byte
-	ID    string                 `nbt:"id"`
-	Tag   map[string]interface{} `nbt:"tag"`
+	ID    string         `nbt:"id"`
+	Tag   map[string]any `nbt:"tag"`
 }
 
 func ReadPlayerData(r io.Reader) (data PlayerData, err error) {
diff --git a/save/region/mca_test.go b/save/region/mca_test.go
index a60a16b..85d7be2 100644
--- a/save/region/mca_test.go
+++ b/save/region/mca_test.go
@@ -43,7 +43,7 @@ func TestReadRegion(t *testing.T) {
 			if err != nil {
 				t.Error(err)
 			}
-			var b interface{}
+			var b any
 			_, err = nbt.NewDecoder(r).Decode(&b)
 			if err != nil {
 				t.Error(err)
diff --git a/server/command/command.go b/server/command/command.go
index 60553f9..1d79659 100644
--- a/server/command/command.go
+++ b/server/command/command.go
@@ -54,7 +54,7 @@ func (g *Graph) Execute(ctx context.Context, cmd string) error {
 	}
 }
 
-type ParsedData interface{}
+type ParsedData any
 
 type HandlerFunc func(ctx context.Context, args []ParsedData) error
 
diff --git a/server/internal/bvh/bvh.go b/server/internal/bvh/bvh.go
index 9ae6469..0bb688c 100644
--- a/server/internal/bvh/bvh.go
+++ b/server/internal/bvh/bvh.go
@@ -121,7 +121,7 @@ func (t *Tree[I, B, V]) Insert(leaf B, value V) (n *Node[I, B, V]) {
 	return
 }
 
-func (t *Tree[I, B, V]) Delete(n *Node[I, B, V]) interface{} {
+func (t *Tree[I, B, V]) Delete(n *Node[I, B, V]) any {
 	if n.parent == nil {
 		// n is the root
 		t.root = nil
@@ -204,11 +204,11 @@ type (
 	}
 )
 
-func (h searchHeap[I, V]) Len() int            { return len(h) }
-func (h searchHeap[I, V]) Less(i, j int) bool  { return h[i].inheritedCost < h[j].inheritedCost }
-func (h searchHeap[I, V]) Swap(i, j int)       { h[i], h[j] = h[j], h[i] }
-func (h *searchHeap[I, V]) Push(x interface{}) { *h = append(*h, x.(searchItem[I, V])) }
-func (h *searchHeap[I, V]) Pop() interface{} {
+func (h searchHeap[I, V]) Len() int           { return len(h) }
+func (h searchHeap[I, V]) Less(i, j int) bool { return h[i].inheritedCost < h[j].inheritedCost }
+func (h searchHeap[I, V]) Swap(i, j int)      { h[i], h[j] = h[j], h[i] }
+func (h *searchHeap[I, V]) Push(x any)        { *h = append(*h, x.(searchItem[I, V])) }
+func (h *searchHeap[I, V]) Pop() any {
 	old := *h
 	n := len(old)
 	x := old[n-1]
diff --git a/yggdrasil/user/user.go b/yggdrasil/user/user.go
index 913fe5a..dbc31ec 100644
--- a/yggdrasil/user/user.go
+++ b/yggdrasil/user/user.go
@@ -54,7 +54,7 @@ func fetchKeyPair(accessToken string) (KeyPairResp, error) {
 	return keyPairResp, err
 }
 
-func post(endpoint string, accessToken string, resp interface{}) error {
+func post(endpoint string, accessToken string, resp any) error {
 	rowResp, err := rawPost(endpoint, accessToken)
 	if err != nil {
 		return fmt.Errorf("request fail: %v", err)
diff --git a/yggdrasil/yggdrasil.go b/yggdrasil/yggdrasil.go
index 27c6bce..86788f0 100644
--- a/yggdrasil/yggdrasil.go
+++ b/yggdrasil/yggdrasil.go
@@ -28,7 +28,7 @@ var AuthURL = "https://authserver.mojang.com"
 
 var client = http.DefaultClient
 
-func post(endpoint string, payload interface{}, resp interface{}) error {
+func post(endpoint string, payload any, resp any) error {
 	rowResp, err := rawPost(endpoint, payload)
 	if err != nil {
 		return fmt.Errorf("request fail: %v", err)
@@ -43,7 +43,7 @@ func post(endpoint string, payload interface{}, resp interface{}) error {
 	return nil
 }
 
-func rawPost(endpoint string, payload interface{}) (*http.Response, error) {
+func rawPost(endpoint string, payload any) (*http.Response, error) {
 	data, err := json.Marshal(payload)
 	if err != nil {
 		return nil, fmt.Errorf("marshal payload fail: %v", err)