diff --git a/src/LevelChunkPacket.php b/src/LevelChunkPacket.php
index d2824b41..cb3dec89 100644
--- a/src/LevelChunkPacket.php
+++ b/src/LevelChunkPacket.php
@@ -91,7 +91,9 @@ public function getExtraPayload() : string{
 
 	protected function decodePayload(PacketSerializer $in) : void{
 		$this->chunkPosition = ChunkPosition::read($in);
-		$this->dimensionId = $in->getVarInt();
+		if($in->getProtocol() >= ProtocolInfo::PROTOCOL_649){
+			$this->dimensionId = $in->getVarInt();
+		}
 
 		$subChunkCountButNotReally = $in->getUnsignedVarInt();
 		if($subChunkCountButNotReally === self::CLIENT_REQUEST_FULL_COLUMN_FAKE_COUNT){
@@ -121,7 +123,9 @@ protected function decodePayload(PacketSerializer $in) : void{
 
 	protected function encodePayload(PacketSerializer $out) : void{
 		$this->chunkPosition->write($out);
-		$out->putVarInt($this->dimensionId);
+		if($out->getProtocol() >= ProtocolInfo::PROTOCOL_649){
+			$out->putVarInt($this->dimensionId);
+		}
 
 		if($this->clientSubChunkRequestsEnabled){
 			if($this->subChunkCount === PHP_INT_MAX){
diff --git a/src/PlayerAuthInputPacket.php b/src/PlayerAuthInputPacket.php
index 613f7089..80fb407e 100644
--- a/src/PlayerAuthInputPacket.php
+++ b/src/PlayerAuthInputPacket.php
@@ -250,8 +250,10 @@ protected function decodePayload(PacketSerializer $in) : void{
 				};
 			}
 		}
-		if($this->hasFlag(PlayerAuthInputFlags::IN_CLIENT_PREDICTED_VEHICLE)){
-			$this->clientPredictedVehicleActorUniqueId = $in->getActorUniqueId();
+		if($in->getProtocol() >= ProtocolInfo::PROTOCOL_649){
+			if($this->hasFlag(PlayerAuthInputFlags::IN_CLIENT_PREDICTED_VEHICLE)){
+				$this->clientPredictedVehicleActorUniqueId = $in->getActorUniqueId();
+			}
 		}
 		if($in->getProtocol() >= ProtocolInfo::PROTOCOL_575){
 			$this->analogMoveVecX = $in->getLFloat();
@@ -291,8 +293,10 @@ protected function encodePayload(PacketSerializer $out) : void{
 				$blockAction->write($out);
 			}
 		}
-		if($this->clientPredictedVehicleActorUniqueId !== null){
-			$out->putActorUniqueId($this->clientPredictedVehicleActorUniqueId);
+		if($out->getProtocol() >= ProtocolInfo::PROTOCOL_649){
+			if($this->clientPredictedVehicleActorUniqueId !== null){
+				$out->putActorUniqueId($this->clientPredictedVehicleActorUniqueId);
+			}
 		}
 		if($out->getProtocol() >= ProtocolInfo::PROTOCOL_575){
 			$out->putLFloat($this->analogMoveVecX);
diff --git a/src/PlayerListPacket.php b/src/PlayerListPacket.php
index b622aa7e..48b7a516 100644
--- a/src/PlayerListPacket.php
+++ b/src/PlayerListPacket.php
@@ -69,7 +69,9 @@ protected function decodePayload(PacketSerializer $in) : void{
 				$entry->skinData = $in->getSkin();
 				$entry->isTeacher = $in->getBool();
 				$entry->isHost = $in->getBool();
-				$entry->isSubClient = $in->getBool();
+				if($in->getProtocol() >= ProtocolInfo::PROTOCOL_649){
+					$entry->isSubClient = $in->getBool();
+				}
 			}else{
 				$entry->uuid = $in->getUUID();
 			}
@@ -97,7 +99,9 @@ protected function encodePayload(PacketSerializer $out) : void{
 				$out->putSkin($entry->skinData);
 				$out->putBool($entry->isTeacher);
 				$out->putBool($entry->isHost);
-				$out->putBool($entry->isSubClient);
+				if($out->getProtocol() >= ProtocolInfo::PROTOCOL_649){
+					$out->putBool($entry->isSubClient);
+				}
 			}else{
 				$out->putUUID($entry->uuid);
 			}
diff --git a/src/ProtocolInfo.php b/src/ProtocolInfo.php
index 5266ca9a..6e257103 100644
--- a/src/ProtocolInfo.php
+++ b/src/ProtocolInfo.php
@@ -40,6 +40,7 @@ private function __construct(){
 
 	public const BASE_VERSION = '1.18.0';
 
+	public const PROTOCOL_649 = 649; // 1.20.60
 	public const PROTOCOL_630 = 630; // 1.20.50
 	public const PROTOCOL_622 = 622; // 1.20.40
 	public const PROTOCOL_618 = 618; // 1.20.30
@@ -61,6 +62,7 @@ private function __construct(){
 	public const PROTOCOL_475 = 475; // v1.18.0
 
 	public const COMPATIBLE_PROTOCOL = [
+		self::PROTOCOL_649,
 		self::PROTOCOL_630,
 		self::PROTOCOL_622,
 		self::PROTOCOL_618,