diff --git a/lessons/R-time-series-modeling-3/r_tutorial.qmd b/lessons/R-time-series-modeling-3/r_tutorial.qmd
index f76cd25..057049c 100644
--- a/lessons/R-time-series-modeling-3/r_tutorial.qmd
+++ b/lessons/R-time-series-modeling-3/r_tutorial.qmd
@@ -16,6 +16,7 @@ library(tsibble)
 library(fable)
 library(feasts)
 library(ggtime)
+library(dplyr)
 ```
 
 * Load the data