diff --git a/library.properties b/library.properties
index 85e438b..8b26c77 100644
--- a/library.properties
+++ b/library.properties
@@ -7,3 +7,4 @@ paragraph=Requires the Arduino Time library, http://www.arduino.cc/playground/Co
 category=Timing
 url=https://github.com/JChristensen/MCP79412RTC
 architectures=avr
+depends=Time