diff --git a/README.adoc b/README.adoc
index 71e1f1946..0ecea0ddc 100644
--- a/README.adoc
+++ b/README.adoc
@@ -70,4 +70,5 @@ Quick start:
 ## More info
 
  * xref:arch/README.adoc[Architecture specification format]
- * xref:arch/README.adoc[Documentation for the generator tool and IDL]
\ No newline at end of file
+ * xref:arch/README.adoc[Documentation for the generator tool and IDL]
+ ** https://riscv-software-src.github.io/riscv-unified-db/ruby/index.html[YARD docs for the generator tool and IDL]