diff --git a/README.md b/README.md
index fa8bab91..2dc77c50 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
 It is an opinionated implementation adding language constructs and convenience methods for working
 with the spec. It values strong adherence to the spec and data formats.
 
-It currently targets version `0.9` of the CNB spec.
+It currently targets version `0.9` of the CNB [Buildpack API specification](https://github.com/buildpacks/spec/blob/buildpack/0.9/buildpack.md).
 
 ## Quick Start Guide