diff --git a/Arduino-IDE.md b/Arduino-IDE.md
index 65a63183..2a05631b 100644
--- a/Arduino-IDE.md
+++ b/Arduino-IDE.md
@@ -50,7 +50,7 @@ Remove default compile options for floating point ``printf`` and ``scanf`` which
 
 <img src="https://github.com/arendst/arendst.github.io/blob/master/media/arduinoide242b.png" width="300" />
 
-#### ESP8266 Board version 2.5.0:
+#### ESP8266 Board version 2.5.1:
 
 <img src="https://github.com/arendst/arendst.github.io/blob/master/media/arduinoide250b.png" width="300" />