diff --git a/library.json b/library.json
index b253ee6..2978be6 100644
--- a/library.json
+++ b/library.json
@@ -1,24 +1,25 @@
 {
-  "name": "M5HAL",
-  "description": "Hardware Abstraction Layer(HAL) for M5 Products",
-  "keywords": "M5HAL",
-  "authors": {
-    "name": "M5Stack",
-    "url": "http://www.m5stack.com"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/m5stack/M5HAL.git"
-  },
-  "dependencies": [],
-  "version": "0.0.1",
-  "frameworks": [
-    "arduino",
-    "espidf",
-    "*"
-  ],
-  "platforms": [
-    "espressif32"
-  ],
-  "headers": "M5HAL.hpp"
-}
\ No newline at end of file
+    "name": "M5HAL",
+    "description": "Hardware Abstraction Layer(HAL) for M5 Products",
+    "keywords": "M5HAL",
+    "authors": {
+        "name": "M5Stack",
+        "url": "http://www.m5stack.com"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/m5stack/M5HAL.git"
+    },
+    "dependencies": [],
+    "version": "0.0.1",
+    "frameworks": [
+        "arduino",
+        "espidf",
+        "*"
+    ],
+    "platforms": [
+        "espressif32"
+    ],
+    "headers": "M5HAL.hpp",
+    "license": "MIT"
+}