diff --git a/GPIO/GPIO b/GPIO/GPIO
index bc4a9d2..38ff911 100644
Binary files a/GPIO/GPIO and b/GPIO/GPIO differ
diff --git a/GPIO/GPIO.go b/GPIO/GPIO.go
index b9198e8..80dc3fc 100644
--- a/GPIO/GPIO.go
+++ b/GPIO/GPIO.go
@@ -68,7 +68,7 @@ var num_reconnect_pub = 0
 var num_reconnect_sub = 0
 var (
 	// Use mcu pin 10, corresponds to physical pin 19 on the pi
-	relay = rpio.Pin(9) // 6- raspberry pi 1 / 9 - raspberry 3B+
+	relay = rpio.Pin(10) // 6- raspberry pi 1 / 9 - raspberry 3B+
 )
 
 // {