diff --git a/lib/FWIF/FWIF.php b/lib/FWIF/FWIF.php
index 77a5659..ef5117c 100644
--- a/lib/FWIF/FWIF.php
+++ b/lib/FWIF/FWIF.php
@@ -16,14 +16,16 @@ class FWIF {
     public const EXCLUDE_VERSION      = 0x02; // Exclude version byte at the start of the stream
 
     public const TYPE_NULL      = 0;    // NULL, no data
-    public const TYPE_INTEGER   = 0x01; // LEB128, implicit length
-    public const TYPE_FLOAT     = 0x02; // double precision IEEE 754, fixed length of 8 bytes
-    public const TYPE_STRING    = 0x03; // UTF-8 string, terminated with TRAILER
-    public const TYPE_BUFFER    = 0x04; // Buffer with binary data, prefixed with a LEB128 length
-    public const TYPE_ARRAY     = 0x05; // List of values, terminated with TRAILER
-    public const TYPE_OBJECT    = 0x06; // List of values with ASCII names, terminated with TRAILER
-    public const TYPE_DATETIME  = 0x07; // A gregorian year, month and day as well as an hour, minute, seconds and millisecond component, variable ranging from 4 to 7 bytes
-    public const TYPE_TIMESPAN  = 0x08; // A period of time, containing days, hours, minutes, seconds and milliseconds, variable ranging from 4 to 6 bytes
+    public const TYPE_TRUE      = 0x01; // Represents a TRUE boolean value
+    public const TYPE_FALSE     = 0x02; // Represents a FALSE boolean value
+    public const TYPE_INTEGER   = 0x03; // LEB128, implicit length
+    public const TYPE_FLOAT     = 0x04; // double precision IEEE 754, fixed length of 8 bytes
+    public const TYPE_STRING    = 0x05; // UTF-8 string, terminated with TRAILER
+    public const TYPE_BUFFER    = 0x06; // Buffer with binary data, prefixed with a LEB128 length
+    public const TYPE_ARRAY     = 0x07; // List of values, terminated with TRAILER
+    public const TYPE_OBJECT    = 0x08; // List of values with ASCII names, terminated with TRAILER
+    public const TYPE_DATETIME  = 0x09; // A gregorian year, month and day as well as an hour, minute, seconds and millisecond component, variable ranging from 4 to 7 bytes
+    public const TYPE_TIMESPAN  = 0x10; // A period of time, containing days, hours, minutes, seconds and milliseconds, variable ranging from 4 to 6 bytes
     
     public const TRAILER = 0xFF; // Termination byte
 
@@ -31,6 +33,8 @@ class FWIF {
 
     private const CODECS = [
         self::TYPE_NULL     => 'Null',
+        self::TYPE_TRUE     => 'True',
+        self::TYPE_FALSE    => 'False',
         self::TYPE_INTEGER  => 'Integer',
         self::TYPE_FLOAT    => 'Float',
         self::TYPE_STRING   => 'String',
@@ -68,6 +72,8 @@ class FWIF {
     private static function detectType($data, int $flags): int {
         if(is_null($data))
             return self::TYPE_NULL;
+        if(is_bool($data))
+            return $data ? self::TYPE_TRUE : self::TYPE_FALSE;
         if(is_int($data))
             return self::TYPE_INTEGER;
         if(is_float($data))
@@ -132,15 +138,21 @@ class FWIF {
     private static function encodeNull($data, int $flags): string { return ''; }
     private static function decodeNull($data, int $flags) { return null; }
 
+    private static function encodeTrue($data, int $flags): string { return ''; }
+    private static function decodeTrue($data, int $flags): bool { return true; }
+
+    private static function encodeFalse($data, int $flags): string { return ''; }
+    private static function decodeFalse($data, int $flags): bool { return false; }
+
     private static function encodeInteger(int $number, int $flags): string {
-        $packed = ''; $more = 1; $negative = $number < 0; $size = PHP_INT_SIZE * 8;
+        $packed = ''; $more = true; $negative = $number < 0; $size = PHP_INT_SIZE * 8;
         while($more) {
             $byte = $number & 0x7F;
             $number >>= 7;
             if($negative)
                 $number |= (~0 << ($size - 7));
             if((!$number && !($byte & 0x40)) || ($number === -1 && ($byte & 0x40)))
-                $more = 0;
+                $more = false;
             else
                 $byte |= 0x80;
             $packed .= chr($byte);
diff --git a/public/index.php b/public/index.php
index 19c8169..b264e42 100644
--- a/public/index.php
+++ b/public/index.php
@@ -12,6 +12,7 @@ header('Content-Type: ' . FWIF::CONTENT_TYPE);
 if($request->match('GET', '/packages')) {
     $tags = explode(';', (string)$request->getQueryParam('tags', FILTER_SANITIZE_STRING));
     $packages = empty($tags) ? Patchouli::getPackages() : Patchouli::getPackagesWithTags($tags);
+    header('Content-Type: text/plain; charset=us-ascii');
     echo FWIF::encode($packages);
     return;
 }
diff --git a/src/Dummy/DummyPackage.php b/src/Dummy/DummyPackage.php
index c35ba64..051322a 100644
--- a/src/Dummy/DummyPackage.php
+++ b/src/Dummy/DummyPackage.php
@@ -27,7 +27,9 @@ class DummyPackage implements IPackage {
             'name' => $this->getName(),
             'version' => $this->getVersion(),
             'deps' => [],
-            'null' => null,
+            /*'null' => null,
+            'true' => true,
+            'false' => false,
             'zero' => 0,
             'u8' => 0x42,
             'u16' => 0x4344,
@@ -73,7 +75,7 @@ class DummyPackage implements IPackage {
             'periodZero' => (new \DateTime())->diff(new \DateTime()),
             'array' => ['e', 'a', 0x55],
             'object' => new \stdClass,
-            'misaka' => '御坂 美琴',
+            'misaka' => '御坂 美琴',*/
         ];
         foreach($this->getDependencies() as $dependency)
             $data['deps'][] = $dependency->getName();