diff --git a/changes.txt b/changes.txt
index 0618674..60332cf 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,3 +1,7 @@
+3 Jan 2016
+- Added Authentication with Ntag 213,215,216 returns the pACK MFRC522::PCD_NTAG216_AUTH
+- Starting to use versions http://semver.org/
+
 5 Dec 2015
 - recognize infineon cards correctly @mayatforest
 - added multi reader support, see example @lmmeng
diff --git a/library.json b/library.json
index 94e8453..07b6dba 100644
--- a/library.json
+++ b/library.json
@@ -7,6 +7,7 @@
     "type": "git",
     "url": "https://github.com/miguelbalboa/rfid.git"
   },
+  "version": "1.1.0",
   "exclude": "doc",
   "frameworks": "arduino",
   "platforms": ["atmelavr", "ststm32"]