diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index fded1e0..051586b 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -196,6 +196,10 @@
    builds, but this behaviour can be overridden in each platform's Makefile or
    in the build command line.
 
+ -  ``ENABLE_LTO``: Boolean option to enable Link Time Optimization (LTO)
+   support in GCC for TF-A. This option is currently only supported for
+   AArch64. Default is 0.
+
 -  ``ENABLE_MPAM_FOR_LOWER_ELS``: Boolean option to enable lower ELs to use MPAM
    feature. MPAM is an optional Armv8.4 extension that enables various memory
    system components and resources to define partitions; software running at