diff --git a/Tools/AP_Periph/version.h b/Tools/AP_Periph/version.h
index 17d18f7c13..0d24797dc9 100644
--- a/Tools/AP_Periph/version.h
+++ b/Tools/AP_Periph/version.h
@@ -1,14 +1,15 @@
 #pragma once
 
-#define THISFIRMWARE "AP_Periph V1.3.1beta1"
+#define THISFIRMWARE "AP_Periph V1.3.1"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 1,3,1,FIRMWARE_VERSION_TYPE_BETA
+#define FIRMWARE_VERSION 1,3,1,FIRMWARE_VERSION_TYPE_OFFICIAL
 
 #define FW_MAJOR 1
 #define FW_MINOR 3
 #define FW_PATCH 1
-#define FW_TYPE FIRMWARE_VERSION_TYPE_BETA
+#define FW_TYPE FIRMWARE_VERSION_TYPE_OFFICIAL
+