diff --git a/include/datetime.h b/include/datetime.h
index a33bfb6..12de111 100644
--- a/include/datetime.h
+++ b/include/datetime.h
@@ -15,6 +15,8 @@ struct datetime_struct : tm
 
 extern RTC_DATA_ATTR struct datetime_struct now;
 
-bool setupDateTime();
+void setupDateTime();
+void loopDateTime();
+bool updateDateTime();
 
 #endif
\ No newline at end of file