diff --git a/README.md b/README.md
index 977085a..8294f0b 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,20 @@
 
 Kernel for **Rmphp**
 
+## Install
+
+Stable version
+
+```bash
+composer require rmphp/kernel
+```
+```bash
+composer require rmphp/kernel:"^1.0"
+```
+
+
+Dev version contains the latest changes
+
+```bash
+composer require rmphp/kernel:"1.0.x-dev"
+```
diff --git a/composer.json b/composer.json
index b1ecad0..97f43fb 100644
--- a/composer.json
+++ b/composer.json
@@ -9,6 +9,7 @@
 	],
 	"require": {
 		"php": "^8.1",
+		"ext-yaml": "*",
 		"psr/log": "^3.0.0",
 		"psr/container": "^1.0",
 		"rmphp/foundation": "1.0.x-dev"