diff --git a/library.properties b/library.properties
index 1693db8..2c5d58c 100644
--- a/library.properties
+++ b/library.properties
@@ -6,5 +6,6 @@ sentence=Timekeeping functionality for Arduino
 paragraph=Date and Time functions, with provisions to synchronize to external time sources like GPS and NTP (Internet).  This library is often used together with TimeAlarms and DS1307RTC.
 category=Timing
 url=http://playground.arduino.cc/Code/Time/
+includes=TimeLib.h
 architectures=*