diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -26,6 +26,8 @@
 
 ## Documentation
 
+> :warning: **The documentation of this repo is not maintained anymore**. Please raise any documentation-specific pull requests in [primer.style/design](https://github.com/primer/design/) 
+
 Our documentation site lives at [primer.style/css](https://primer.style/css). You'll be able to find detailed documentation on getting started, all of the components, our theme, our principles, and more.
 
 ## Install