diff --git a/.Rbuildignore b/.Rbuildignore
index 666c0c9..66fc694 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -22,4 +22,5 @@ R/olm_functions.R
 vignettes/download_functions.Rmd
 vignettes/epa_download.Rmd
 vignettes/protected_datasets.Rmd
-inst/extdata/air.2m
\ No newline at end of file
+inst/extdata/air.2m
+LICENSE.md
\ No newline at end of file