diff --git a/.Rbuildignore b/.Rbuildignore
index aeb8d5c6..98c75300 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -17,3 +17,4 @@ README.Rmd
 README_files
 README.md
 pkgdown
+^CRAN-RELEASE$
diff --git a/CRAN-RELEASE b/CRAN-RELEASE
new file mode 100644
index 00000000..e0021a5b
--- /dev/null
+++ b/CRAN-RELEASE
@@ -0,0 +1,2 @@
+This package was submitted to CRAN on 2019-09-24.
+Once it is accepted, delete this file and tag the release (commit a214143d57).