diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..e9c9c55
Binary files /dev/null and b/.DS_Store differ
diff --git a/.Rbuildignore b/.Rbuildignore
index c63a066..9137ff0 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -3,3 +3,7 @@ LICENSE
 ^appveyor\.yml$
 .gitignore
 .github
+^.*\.Rproj$
+^\.Rproj\.user$
+^CRAN-SUBMISSION$
+cran-comments.md
diff --git a/.gitignore b/.gitignore
index 577f512..8ce591d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
 *.Rproj
+.Rproj.user*
+.Rproj.user
+cran-comments.md