diff --git a/library.properties b/library.properties
index e69c7fd..1359413 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Arduino Low Power
-version=1.2.0
+version=1.2.1
 author=Arduino
 maintainer=Arduino LLC
 sentence=Power save primitives features for SAMD and nRF52 32bit boards
@@ -7,3 +7,4 @@ paragraph=With this library you can manage the low power states of newer Arduino
 category=Device Control
 url=http://arduino.cc/libraries/ArduinoLowPower
 architectures=samd,nrf52
+depends=RTCZero