diff --git a/boot/debug/boot.py b/boot/debug/boot.py
index 0f6dfc6..ae9515d 100755
--- a/boot/debug/boot.py
+++ b/boot/debug/boot.py
@@ -6,10 +6,10 @@
 pwr = pyb.Pin("B15", pyb.Pin.OUT)
 pwr.on()
 
-# v1.5.6-rc1 - use odd rc for main firmware and even for debug
+# v1.6.0-rc1 - use odd rc for main firmware and even for debug
 # so it's possible to upgrade from debug to main firmware.
 # (rc99 is final version for production)
-version = "<version:tag10>0100500601</version:tag10>"
+version = "<version:tag10>0100600001</version:tag10>"
 
 leds = [pyb.LED(i) for i in range(1,5)]
 # poweroff on button press
diff --git a/boot/main/boot.py b/boot/main/boot.py
index 48ec1dd..352d90d 100755
--- a/boot/main/boot.py
+++ b/boot/main/boot.py
@@ -13,10 +13,10 @@
 pwr = pyb.Pin("B15", pyb.Pin.OUT)
 pwr.on()
 
-# v1.5.6-rc99 - use odd rc for main firmware and even for debug
+# v1.6.0-rc99 - use odd rc for main firmware and even for debug
 # so it's possible to upgrade from debug to main firmware.
 # (rc99 is final version for production)
-version = "<version:tag10>0100500699</version:tag10>"
+version = "<version:tag10>0100600099</version:tag10>"
 
 # get i2c
 i2c = pyb.I2C(1)