diff --git a/packages.bib b/packages.bib
index f9283c44..e1eb08bc 100644
--- a/packages.bib
+++ b/packages.bib
@@ -10,7 +10,7 @@ @Manual{R-bookdown
   title = {bookdown: Authoring Books and Technical Documents with R Markdown},
   author = {Yihui Xie},
   year = {2018},
-  note = {R package version 0.7},
+  note = {R package version 0.9},
   url = {https://CRAN.R-project.org/package=bookdown},
 }
 @Manual{R-knitr,