diff --git a/.Rbuildignore b/.Rbuildignore
index 672c1ee..7091458 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -1,3 +1,6 @@
 CONTRIBUTING
 README.rst
 .travis.yml
+.appveyor.yml
+cran-comments.rst
+revdep
diff --git a/.gitignore b/.gitignore
index 1fbd2db..7409096 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.swp
 README.md
+revdep/
diff --git a/cran-comments.rst b/cran-comments.rst
new file mode 100644
index 0000000..0dc0240
--- /dev/null
+++ b/cran-comments.rst
@@ -0,0 +1,17 @@
+**Test environments**
+
+* local (linux), R 3.4.4
+* win-builder (windows), R devel and R release
+* travis-ci (OSX), R release
+* travis-ci (linux), R devel and R release
+* appveyor (windows), R devel and R release
+
+**R CMD check --as-cran results**
+
+Status: OK
+
+**Downstream dependencies**
+
+I have also run R CMD check on downstream dependencies of ``getopt``.
+All packages had no ERRORs or WARNINGs.  
+HadoopStreaming has a NOTE unrelated to my package.