diff --git a/lib/linguist/vendor.yml b/lib/linguist/vendor.yml
index 135f367c..53f66bc0 100644
--- a/lib/linguist/vendor.yml
+++ b/lib/linguist/vendor.yml
@@ -182,3 +182,7 @@
 
 # .DS_Store's
 - .[Dd][Ss]_[Ss]tore$
+
+# R packages
+- vignettes/
+- inst/extdata/