diff --git a/src/pocketmine/network/mcpe/protocol/AvailableCommandsPacket.php b/src/pocketmine/network/mcpe/protocol/AvailableCommandsPacket.php
index 6592afe67..a885a32b3 100644
--- a/src/pocketmine/network/mcpe/protocol/AvailableCommandsPacket.php
+++ b/src/pocketmine/network/mcpe/protocol/AvailableCommandsPacket.php
@@ -103,6 +103,13 @@ class AvailableCommandsPacket extends DataPacket{
 	 */
 	public $commandData = [];
 
+	/**
+	 * @var CommandEnum[]
+	 * List of dynamic command enums, also referred to as "soft" enums. These can by dynamically updated mid-game
+	 * without resending this packet.
+	 */
+	public $softEnums = [];
+
 	protected function decodePayload(){
 		for($i = 0, $this->enumValuesCount = $this->getUnsignedVarInt(); $i < $this->enumValuesCount; ++$i){
 			$this->enumValues[] = $this->getString();
@@ -119,6 +126,10 @@ class AvailableCommandsPacket extends DataPacket{
 		for($i = 0, $count = $this->getUnsignedVarInt(); $i < $count; ++$i){
 			$this->commandData[] = $this->getCommandData();
 		}
+
+		for($i = 0, $count = $this->getUnsignedVarInt(); $i < $count; ++$i){
+			$this->softEnums[] = $this->getSoftEnum();
+		}
 	}
 
 	protected function getEnum() : CommandEnum{
@@ -133,6 +144,18 @@ class AvailableCommandsPacket extends DataPacket{
 		return $retval;
 	}
 
+	protected function getSoftEnum() : CommandEnum{
+		$retval = new CommandEnum();
+		$retval->enumName = $this->getString();
+
+		for($i = 0, $count = $this->getUnsignedVarInt(); $i < $count; ++$i){
+			//Get the enum value from the initial pile of mess
+			$retval->enumValues[] = $this->getString();
+		}
+
+		return $retval;
+	}
+
 	protected function putEnum(CommandEnum $enum){
 		$this->putString($enum->enumName);
 
@@ -147,6 +170,15 @@ class AvailableCommandsPacket extends DataPacket{
 		}
 	}
 
+	protected function putSoftEnum(CommandEnum $enum) : void{
+		$this->putString($enum->enumName);
+
+		$this->putUnsignedVarInt(count($enum->enumValues));
+		foreach($enum->enumValues as $value){
+			$this->putString($value);
+		}
+	}
+
 	protected function getEnumValueIndex() : int{
 		if($this->enumValuesCount < 256){
 			return $this->getByte();
@@ -334,6 +366,11 @@ class AvailableCommandsPacket extends DataPacket{
 		foreach($this->commandData as $data){
 			$this->putCommandData($data);
 		}
+
+		$this->putUnsignedVarInt(count($this->softEnums));
+		foreach($this->softEnums as $enum){
+			$this->putSoftEnum($enum);
+		}
 	}
 
 	public function handle(NetworkSession $session) : bool{