diff --git a/include/btstack/hci_cmds.h b/include/btstack/hci_cmds.h
index 998658777..0877cc348 100644
--- a/include/btstack/hci_cmds.h
+++ b/include/btstack/hci_cmds.h
@@ -165,6 +165,7 @@ extern hci_cmd_t hci_inquiry;
 extern hci_cmd_t hci_inquiry_cancel;
 extern hci_cmd_t hci_link_key_request_negative_reply;
 extern hci_cmd_t hci_pin_code_request_reply;
+extern hci_cmd_t hci_authentication_requested;
 extern hci_cmd_t hci_set_event_mask;
 extern hci_cmd_t hci_reset;
 extern hci_cmd_t hci_create_connection;
diff --git a/src/hci_cmds.c b/src/hci_cmds.c
index c11706a35..d66e57e3d 100644
--- a/src/hci_cmds.c
+++ b/src/hci_cmds.c
@@ -170,6 +170,10 @@ hci_cmd_t hci_pin_code_request_reply = {
 OPCODE(OGF_LINK_CONTROL, 0x0d), "B1P"
 // BD_ADDR, pin length, PIN: c-string
 };
+hci_cmd_t hci_authentication_requested = {
+OPCODE(OGF_LINK_CONTROL, 0x11), "H"
+// Handle
+};
 hci_cmd_t hci_remote_name_request = {
 OPCODE(OGF_LINK_CONTROL, 0x19), "B112"
 // BD_ADDR, Page_Scan_Repetition_Mode, Reserved, Clock_Offset