diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 0e5c7a0..208d7cf 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -580,6 +580,9 @@
 
 For Neoverse V3, the following errata build flags are defined :
 
+- ``ERRATA_V3_2970647``: This applies errata 2970647 workaround to Neoverse-V3
+  CPU. This needs to be enabled for revision r0p0. It is fixed in r0p1.
+
 - ``ERRATA_V3_3701767``: This applies errata 3701767 workaround to Neoverse-V3
   CPU. This needs to be enabled for revisions r0p0, r0p1, r0p2 of the CPU and
   is still open.