diff --git a/composer.json b/composer.json
index c93d4ba..356a198 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "kiwilan/php-opds",
     "description": "PHP package to create OPDS feed for eBooks.",
-    "version": "1.0.0-alpha.3",
+    "version": "1.0.0-alpha.4",
     "keywords": [
         "php",
         "ebook",