diff --git a/intro.Rmd b/intro.Rmd
index ba87dcf..016ca13 100644
--- a/intro.Rmd
+++ b/intro.Rmd
@@ -128,7 +128,7 @@ You'll also need to install some R packages. An R _package_ is a collection of f
 
 ```{r}
 pkgs <- c(
-  "bookdown", "broom", "dplyr", "ggplot2", "jpeg", "jsonlite", 
+  "broom", "dplyr", "ggplot2", "jpeg", "jsonlite", 
   "knitr", "microbenchmark", "png", "pryr", "purrr", "readr", "stringr", 
   "tidyr"
 )