diff --git a/README.md b/README.md
index fbe0a244..2d79bdfe 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,8 @@ ACME is the protocol used by Let's Encrypt to automate the issuance of HTTPS cer
 These instructions will install an OS specific version of the `step-ca` binary on
 your local machine.
 
+Want to build from source? See [our contributor's guide](docs/contributing.md)
+
 ### Mac OS
 
 Install `step`  and `step-ca` together, via [Homebrew](https://brew.sh/):