diff --git a/README.md b/README.md
index 9f4154615..8c05a44de 100644
--- a/README.md
+++ b/README.md
@@ -127,6 +127,7 @@ extensions in C and/or Ruby. For a guide on how to use mrbgems, consult the
 <!-- BEGIN OF MRUBY DOCUMENT INDEX -->
 
 - [About the Limitations of mruby](doc/limitations.md)
+- [About Amalgamation (Single-File Build)](doc/guides/amalgamation.md)
 - [About the Compile](doc/guides/compile.md)
 - [About the Debugger with the `mrdb` Command](doc/guides/debugger.md)
 - [About GC Arena](doc/guides/gc-arena-howto.md)