diff --git a/Documentation/arm64/index.rst b/Documentation/arm64/index.rst
index 96b696ba4e6c..5c0c69dc58aa 100644
--- a/Documentation/arm64/index.rst
+++ b/Documentation/arm64/index.rst
@@ -16,6 +16,7 @@ ARM64 Architecture
     pointer-authentication
     silicon-errata
     sve
+    tagged-address-abi
     tagged-pointers
 
 .. only::  subproject and html