diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 7ba5023..95d43c4 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -484,6 +484,10 @@
    Cortex-A510 CPU. This needs to be enabled only for revisions r0p0, r0p1,
    r0p2, r0p3 and r1p0, it is fixed in r1p1.
 
+-  ``ERRATA_A510_2042739``: This applies errata 2042739 workaround to
+   Cortex-A510 CPU. This needs to be enabled only for revisions r0p0, r0p1 and
+   r0p2, it is fixed in r0p3.
+
 DSU Errata Workarounds
 ----------------------