diff --git a/README.md b/README.md
index 9028cea2..61b8a1d1 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 ESPurna ("spark" in Catalan) is a custom firmware for ESP8266 based smart switches and sensors.
 It uses the Arduino Core for ESP8266 framework and a number of 3rd party libraries.
 
-[![version](https://img.shields.io/badge/version-1.12.3-brightgreen.svg)](CHANGELOG.md)
+[![version](https://img.shields.io/badge/version-1.12.4a-brightgreen.svg)](CHANGELOG.md)
 ![branch](https://img.shields.io/badge/branch-dev-orange.svg)
 [![travis](https://travis-ci.org/xoseperez/espurna.svg?branch=dev)](https://travis-ci.org/xoseperez/espurna)
 [![license](https://img.shields.io/github/license/xoseperez/espurna.svg)](LICENSE)
diff --git a/code/espurna/config/version.h b/code/espurna/config/version.h
index 4cdd959b..1164a389 100644
--- a/code/espurna/config/version.h
+++ b/code/espurna/config/version.h
@@ -1,5 +1,5 @@
 #define APP_NAME                "ESPURNA"
-#define APP_VERSION             "1.12.3"
+#define APP_VERSION             "1.12.4a"
 #define APP_AUTHOR              "xose.perez@gmail.com"
 #define APP_WEBSITE             "http://tinkerman.cat"
 #define CFG_VERSION             3