--- a
+++ b/CONTRIBUTING.md
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+# How to Contribute
+
+We cannot merge external pull requests into the DeepVariant repository at this
+time. The source of truth for DeepVariant lives in an internal Google codebase,
+and changes must first be made internally.
+
+However, we still welcome community contributions! Please feel free to fork the
+DeepVariant repository and open a pull request or issue with suggested edits. To
+incorporate your contributions, we will make the changes internally and then
+push them to GitHub in the subsequent release. We will attribute the changes to
+you in the commit description and release notes.