diff --git a/README.md b/README.md
index 46acf23..ed7f425 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # playlist-php
 
+streams.json playlist generator allow us to create a m3u or xspf playlist using a streams.json file.
+
 ## Install
 
 ```bash
diff --git a/composer.json b/composer.json
index 9bd0434..3cc0ef4 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,8 @@
 {
     "name": "streams-json/playlist-php",
     "description": "Streams-json playlist generator",
+    "homepage": "https://streams-json.rocketip.net/",
+    "version": "0.1.0",
     "type": "project",
     "license": "MIT",
     "authors": [
diff --git a/src/Extractor/AbstractExtractor.php b/src/Extractor/AbstractExtractor.php
index 53e5e65..6bf8ff7 100644
--- a/src/Extractor/AbstractExtractor.php
+++ b/src/Extractor/AbstractExtractor.php
@@ -10,7 +10,7 @@ abstract class AbstractExtractor implements ExtractorInterface
 {
     public const FILES_PATH = __DIR__.'/../../files';
 
-    private const REQUIRED_JSON_VERSION = 0.1;
+    private const REQUIRED_JSON_VERSION = "0.4.0";
 
     public function support(string $type): bool
     {
@@ -27,7 +27,7 @@ public function extract(string $source): void
             return;
         }
 
-        if ($json->{'_streams.json_Version'} < self::REQUIRED_JSON_VERSION) {
+        if ($json->{'_streams.json_version_'} < self::REQUIRED_JSON_VERSION) {
             echo sprintf(
                 'Version of streams.json is too low, please upgrade to version "%s" or higher.',
                 self::REQUIRED_JSON_VERSION