diff --git a/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerChunkDataPacket.java b/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerChunkDataPacket.java
index 3e655e92..c47be031 100644
--- a/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerChunkDataPacket.java
+++ b/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerChunkDataPacket.java
@@ -5,11 +5,11 @@ import org.spacehq.mc.protocol.data.game.chunk.Column;
 import org.spacehq.mc.protocol.util.NetUtil;
 import org.spacehq.packetlib.io.NetInput;
 import org.spacehq.packetlib.io.NetOutput;
-import org.spacehq.packetlib.io.buffer.ByteBufferNetOutput;
+import org.spacehq.packetlib.io.stream.StreamNetOutput;
 import org.spacehq.packetlib.packet.Packet;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.nio.ByteBuffer;
 
 public class ServerChunkDataPacket implements Packet {
 
@@ -55,15 +55,16 @@ public class ServerChunkDataPacket implements Packet {
 
     @Override
     public void write(NetOutput out) throws IOException {
-        ByteBufferNetOutput byteOut = new ByteBufferNetOutput(ByteBuffer.allocate(557312));
-        int mask = NetUtil.writeColumn(byteOut, this.column, this.column.hasBiomeData(), this.column.hasSkylight());
+        ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
+        NetOutput netOut = new StreamNetOutput(byteOut);
+        int mask = NetUtil.writeColumn(netOut, this.column, this.column.hasBiomeData(), this.column.hasSkylight());
 
         out.writeInt(this.column.getX());
         out.writeInt(this.column.getZ());
         out.writeBoolean(this.column.hasBiomeData());
         out.writeShort(mask);
-        out.writeVarInt(byteOut.getByteBuffer().arrayOffset());
-        out.writeBytes(byteOut.getByteBuffer().array(), byteOut.getByteBuffer().arrayOffset());
+        out.writeVarInt(byteOut.size());
+        out.writeBytes(byteOut.toByteArray(), byteOut.size());
     }
 
     @Override
diff --git a/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerMultiChunkDataPacket.java b/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerMultiChunkDataPacket.java
index c0e69286..646271b2 100644
--- a/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerMultiChunkDataPacket.java
+++ b/src/main/java/org/spacehq/mc/protocol/packet/ingame/server/world/ServerMultiChunkDataPacket.java
@@ -4,11 +4,11 @@ import org.spacehq.mc.protocol.data.game.chunk.Column;
 import org.spacehq.mc.protocol.util.NetUtil;
 import org.spacehq.packetlib.io.NetInput;
 import org.spacehq.packetlib.io.NetOutput;
-import org.spacehq.packetlib.io.buffer.ByteBufferNetOutput;
+import org.spacehq.packetlib.io.stream.StreamNetOutput;
 import org.spacehq.packetlib.packet.Packet;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.nio.ByteBuffer;
 
 public class ServerMultiChunkDataPacket implements Packet {
 
@@ -66,8 +66,6 @@ public class ServerMultiChunkDataPacket implements Packet {
             }
         }
 
-        ByteBufferNetOutput byteOut = new ByteBufferNetOutput(ByteBuffer.allocate(columns.length * 557312));
-
         out.writeBoolean(skylight);
 
         out.writeVarInt(columns.length);
@@ -81,12 +79,15 @@ public class ServerMultiChunkDataPacket implements Packet {
         }
 
         out.writeVarInt(columns.length);
+
+        ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
+        NetOutput netOut = new StreamNetOutput(byteOut);
         for(Column column : columns) {
-            out.writeInt(NetUtil.writeColumn(byteOut, column, true, skylight));
+            out.writeInt(NetUtil.writeColumn(netOut, column, true, skylight));
         }
 
-        out.writeVarInt(byteOut.getByteBuffer().arrayOffset());
-        out.writeBytes(byteOut.getByteBuffer().array(), byteOut.getByteBuffer().arrayOffset());
+        out.writeVarInt(byteOut.size());
+        out.writeBytes(byteOut.toByteArray(), byteOut.size());
     }
 
     @Override
diff --git a/src/main/java/org/spacehq/mc/protocol/util/NetUtil.java b/src/main/java/org/spacehq/mc/protocol/util/NetUtil.java
index 5b4e5f82..6415e1b4 100644
--- a/src/main/java/org/spacehq/mc/protocol/util/NetUtil.java
+++ b/src/main/java/org/spacehq/mc/protocol/util/NetUtil.java
@@ -1,13 +1,13 @@
 package org.spacehq.mc.protocol.util;
 
+import org.spacehq.mc.protocol.data.game.EntityMetadata;
+import org.spacehq.mc.protocol.data.game.ItemStack;
+import org.spacehq.mc.protocol.data.game.Position;
+import org.spacehq.mc.protocol.data.game.Rotation;
 import org.spacehq.mc.protocol.data.game.chunk.BlockStorage;
 import org.spacehq.mc.protocol.data.game.chunk.Chunk;
 import org.spacehq.mc.protocol.data.game.chunk.Column;
-import org.spacehq.mc.protocol.data.game.EntityMetadata;
-import org.spacehq.mc.protocol.data.game.ItemStack;
 import org.spacehq.mc.protocol.data.game.chunk.NibbleArray3d;
-import org.spacehq.mc.protocol.data.game.Position;
-import org.spacehq.mc.protocol.data.game.Rotation;
 import org.spacehq.mc.protocol.data.game.values.MagicValues;
 import org.spacehq.mc.protocol.data.game.values.entity.MetadataType;
 import org.spacehq.mc.protocol.data.game.values.world.block.BlockFace;
@@ -16,14 +16,14 @@ import org.spacehq.opennbt.NBTIO;
 import org.spacehq.opennbt.tag.builtin.CompoundTag;
 import org.spacehq.packetlib.io.NetInput;
 import org.spacehq.packetlib.io.NetOutput;
-import org.spacehq.packetlib.io.buffer.ByteBufferNetInput;
+import org.spacehq.packetlib.io.stream.StreamNetInput;
 
+import java.io.ByteArrayInputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
@@ -236,7 +236,7 @@ public class NetUtil {
     }
 
     public static Column readColumn(byte data[], int x, int z, boolean fullChunk, boolean hasSkylight, int mask) throws IOException {
-        NetInput in = new ByteBufferNetInput(ByteBuffer.wrap(data));
+        NetInput in = new StreamNetInput(new ByteArrayInputStream(data));
         Exception ex = null;
         Column column = null;
         try {