diff --git a/EPD/EPD_service.h b/EPD/EPD_service.h
index 24e8b93..53ce0d6 100644
--- a/EPD/EPD_service.h
+++ b/EPD/EPD_service.h
@@ -43,7 +43,7 @@ void ble_epd_evt_handler(ble_evt_t const * p_ble_evt, void * p_context);
 #define BLE_EPD_DEF(_name) static ble_epd_t _name;
 #endif
 
-#define APP_VERSION 0x18
+#define APP_VERSION 0x19
 
 #define BLE_UUID_EPD_SVC_BASE              {{0XEC, 0X5A, 0X67, 0X1C, 0XC1, 0XB6, 0X46, 0XFB, \
                                              0X8D, 0X91, 0X28, 0XD8, 0X22, 0X36, 0X75, 0X62}}
diff --git a/tools/make-ota-nrf51.bat b/tools/make-ota-nrf51.bat
index 98edfc6..8b035cf 100644
--- a/tools/make-ota-nrf51.bat
+++ b/tools/make-ota-nrf51.bat
@@ -2,7 +2,7 @@
 
 set PATH=%PATH%;%~dp0bin
 
-set fw_ver=0x18
+set fw_ver=0x19
 set fw_hex=%1%2.hex
 set p_key=%~dp0priv.pem
 set bl_hex=%~dp0bootloader\bl_nrf51822_xxaa_s130.hex
diff --git a/tools/make-ota-nrf52.bat b/tools/make-ota-nrf52.bat
index adca1bc..deae109 100644
--- a/tools/make-ota-nrf52.bat
+++ b/tools/make-ota-nrf52.bat
@@ -2,7 +2,7 @@
 
 set PATH=%PATH%;%~dp0bin
 
-set fw_ver=0x18
+set fw_ver=0x19
 set fw_hex=%1%2.hex
 set p_key=%~dp0priv.pem
 set bl_hex=%~dp0bootloader\bl_nrf52811_xxaa_s112.hex