diff --git a/README.md b/README.md
index 55469f8..1f355a2 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,7 @@ First attempt at a library. Lots more changes and fixes to do. Contributions are
 You can either install through the Arduino Library Manager or checkout the latest changes or a release from github
 
 #### Install through Library Manager
-__Currently version 0.8+ works with release 2.0.0 or newer of the [ESP8266 core for Arduino](https://github.com/esp8266/Arduino)__
+__Currently version 0.8+ works with release 2.4.0 or newer of the [ESP8266 core for Arduino](https://github.com/esp8266/Arduino)__
  - in Arduino IDE got to Sketch/Include Library/Manage Libraries
   ![Manage Libraries](http://i.imgur.com/9BkEBkR.png)
 
@@ -87,7 +87,7 @@ __Currently version 0.8+ works with release 2.0.0 or newer of the [ESP8266 core
  - click Install and start [using it](#using)
 
 ####  Checkout from github
-__Github version works with release 2.0.0 or newer of the [ESP8266 core for Arduino](https://github.com/esp8266/Arduino)__
+__Github version works with release 2.4.0 or newer of the [ESP8266 core for Arduino](https://github.com/esp8266/Arduino)__
 - Checkout library to your Arduino libraries folder
 
 ### Using