diff --git a/08_PracticalMachineLearning/027forecasting/index.Rmd b/08_PracticalMachineLearning/027forecasting/index.Rmd
index b8f37db94..71e55e96c 100644
--- a/08_PracticalMachineLearning/027forecasting/index.Rmd
+++ b/08_PracticalMachineLearning/027forecasting/index.Rmd
@@ -88,6 +88,7 @@ knit_hooks$set(plot = knitr:::hook_plot_html)
 
 ```{r loadGOOG}
 library(quantmod)
+library(forecast)
 from.dat <- as.Date("01/01/08", format="%m/%d/%y")
 to.dat <- as.Date("12/31/13", format="%m/%d/%y")
 getSymbols("GOOG", src="google", from = from.dat, to = to.dat)