diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index bde6d97..9676ae7 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -403,6 +403,9 @@
 -  ``ERRATA_N2_2138956``: This applies errata 2138956 workaround to Neoverse-N2
    CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
 
+-  ``ERRATA_N2_2138953``: This applies errata 2138953 workaround to Neoverse-N2
+   CPU. This needs to be enabled for revision r0p0 of the CPU and is still open.
+
 DSU Errata Workarounds
 ----------------------