diff --git a/project/build.properties b/project/build.properties
index 080a737..8522443 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.0
+sbt.version=1.3.2
diff --git a/src/main/java/net/woggioni/worth/buffer/LookAheadInputStream.java b/src/main/java/net/woggioni/worth/buffer/LookAheadInputStream.java
index 6bf9342..d8a06a3 100644
--- a/src/main/java/net/woggioni/worth/buffer/LookAheadInputStream.java
+++ b/src/main/java/net/woggioni/worth/buffer/LookAheadInputStream.java
@@ -6,7 +6,10 @@ import java.io.InputStream;
 
 public class LookAheadInputStream extends InputStream {
 
+    private final byte[] buffer = new byte[1024];
     private final InputStream stream;
+    private int bufferFill = -1;
+    private int cursor = -1;
     private int currentByte;
 
     public LookAheadInputStream(InputStream stream) {
@@ -16,9 +19,18 @@ public class LookAheadInputStream extends InputStream {
     @Override
     @SneakyThrows
     public int read() {
-        int result = currentByte;
-        currentByte = stream.read();
-        return result;
+        if (cursor > bufferFill) {
+            return -1;
+        } else if (cursor == bufferFill) {
+            do {
+                bufferFill = stream.read(buffer, 0, buffer.length) - 1;
+                cursor = 0;
+            } while(bufferFill == -1);
+            currentByte = bufferFill == -2 ? -1 : Math.floorMod(buffer[0], 256);
+        } else {
+            currentByte = Math.floorMod(buffer[++cursor], 256);
+        }
+        return currentByte;
     }
 
     public int getCurrentByte() {
diff --git a/src/main/java/net/woggioni/worth/buffer/LookAheadTextInputStream.java b/src/main/java/net/woggioni/worth/buffer/LookAheadTextInputStream.java
index 3cb4aec..0088ec8 100644
--- a/src/main/java/net/woggioni/worth/buffer/LookAheadTextInputStream.java
+++ b/src/main/java/net/woggioni/worth/buffer/LookAheadTextInputStream.java
@@ -7,8 +7,8 @@ import java.io.Reader;
 
 public class LookAheadTextInputStream extends InputStream {
 
+    private final char[] buffer = new char[1024];
     private final Reader reader;
-    private char[] buffer = new char[1024];
     private int bufferFill = -1;
     private int cursor = -1;
     private int currentChar;
diff --git a/src/main/java/net/woggioni/worth/serialization/binary/JBONParser.java b/src/main/java/net/woggioni/worth/serialization/binary/JBONParser.java
index 02e60cb..46781f1 100644
--- a/src/main/java/net/woggioni/worth/serialization/binary/JBONParser.java
+++ b/src/main/java/net/woggioni/worth/serialization/binary/JBONParser.java
@@ -4,7 +4,6 @@ import lombok.SneakyThrows;
 import net.woggioni.worth.buffer.LookAheadInputStream;
 import net.woggioni.worth.exception.ParseException;
 import net.woggioni.worth.serialization.ValueParser;
-import net.woggioni.worth.serialization.json.JSONParser;
 import net.woggioni.worth.utils.Leb128;
 import net.woggioni.worth.utils.WorthUtils;
 import net.woggioni.worth.xface.Parser;
@@ -36,7 +35,6 @@ public class JBONParser extends ValueParser {
                 return result;
             }
         };
-        stream.read();
 
         try {
             Integer currentId = null;
@@ -132,7 +130,7 @@ public class JBONParser extends ValueParser {
                 }
                 throw error(ParseException::new, "Unfinished %s", type);
             }
-            return WorthUtils.dynamicCast(stack.getFirst(), ArrayStackLevel.class).value.get(0);
+            return ((ArrayStackLevel) stack.getFirst()).value.get(0);
         } catch (NumberFormatException | NegativeArraySizeException e) {
             throw error(ParseException::new, e.getMessage());
         } finally {