diff --git a/gas/ChangeLog b/gas/ChangeLog
index c80527a9b6..9be9530d05 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,7 @@
+2017-03-01  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* doc/c-aarch64.texi (AArch64 Extensions): Document rcpc.
+
 2017-02-28  Jan Beulich  <jbeulich@suse.com>
 
 	* testsuite/gas/i386/x86-64-avx.s: Add suffixed variants of
diff --git a/gas/doc/c-aarch64.texi b/gas/doc/c-aarch64.texi
index f5be0d43bf..2a01c3f5e7 100644
--- a/gas/doc/c-aarch64.texi
+++ b/gas/doc/c-aarch64.texi
@@ -154,6 +154,8 @@ automatically cause those extensions to be disabled.
 @item @code{ras} @tab ARMv8-A @tab ARMv8.2-A or later
  @tab Enable the Reliability, Availability and Serviceability
  extension.
+@item @code{rcpc} @tab ARMv8.2-A @tab ARMv8.3-A or later
+ @tab Enable the weak release consistency extension.
 @item @code{rdma} @tab ARMv8-A @tab ARMv8.1-A or later
  @tab Enable ARMv8.1 Advanced SIMD extensions.  This implies @code{simd}.
 @item @code{simd} @tab ARMv8-A @tab ARMv8-A or later