diff --git a/man2/membarrier.2 b/man2/membarrier.2
index adc0507be..3f4864b50 100644
--- a/man2/membarrier.2
+++ b/man2/membarrier.2
@@ -69,7 +69,7 @@ The
 .I cmd
 argument is one of the following:
 .TP
-.B MEMBARRIER_CMD_QUERY
+.BR MEMBARRIER_CMD_QUERY " (since Linux 4.3)"
 Query the set of supported commands.
 The return value of the call is a bit mask of supported
 commands.
@@ -145,7 +145,7 @@ core command prior to using it.
 Register the process intent to use
 .BR MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE .
 .TP
-.BR MEMBARRIER_CMD_SHARED
+.BR MEMBARRIER_CMD_SHARED " (since Linux 4.3)"
 Alias for
 .BR MEMBARRIER_CMD_GLOBAL .
 Provided for header backward compatibility.