diff --git a/README.md b/README.md
index 9d63c93..a512aa4 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,4 @@
 
 A redesigned Mars for the Urth/Mars Urbit runtime. Currently WIP.
 
-Read the [proposal](docs/proposal/proposal-nock-performance.md) and [hypotheses](docs/proposal/hypotheses.md) for an overview.
+Read the [proposal](docs/proposal/proposal-nock-performance.md) and [hypotheses](docs/proposal/hypotheses.md) for an overview. Before branching or opening a PR please review the [contribution guidelines](CONTRIBUTING.md).