diff --git a/lib/hci.c b/lib/hci.c
index ccaef6b..7ae472c 100644
--- a/lib/hci.c
+++ b/lib/hci.c
@@ -659,6 +659,7 @@ static hci_map ver_map[] = {
 	{ "4.1",	0x07 },
 	{ "4.2",	0x08 },
 	{ "5.0",	0x09 },
+	{ "5.1",	0x0a },
 	{ NULL }
 };