diff --git a/tests/bluetooth/tester/src/btp/btp_gap.h b/tests/bluetooth/tester/src/btp/btp_gap.h
index d4c5325abfe..2e6ad39eb2a 100644
--- a/tests/bluetooth/tester/src/btp/btp_gap.h
+++ b/tests/bluetooth/tester/src/btp/btp_gap.h
@@ -471,6 +471,13 @@ struct btp_gap_ev_periodic_transfer_received_ev {
 	uint8_t data[];
 } __packed;
 
+#define BTP_GAP_EV_ENCRYPTION_CHANGE		0x91
+struct btp_gap_encryption_change_ev {
+	bt_addr_le_t address;
+	uint8_t enabled;
+	uint8_t key_size;
+} __packed;
+
 #if defined(CONFIG_BT_EXT_ADV)
 struct bt_le_per_adv_param;
 struct bt_le_per_adv_sync_param;
diff --git a/tests/bluetooth/tester/src/btp_gap.c b/tests/bluetooth/tester/src/btp_gap.c
index 430118b2e9f..e31f661132d 100644
--- a/tests/bluetooth/tester/src/btp_gap.c
+++ b/tests/bluetooth/tester/src/btp_gap.c
@@ -223,27 +223,34 @@ static void le_security_changed(struct bt_conn *conn, bt_security_t level,
 {
 	struct btp_gap_sec_level_changed_ev sec_ev;
 	struct btp_gap_bond_lost_ev bond_ev;
+	struct btp_gap_encryption_change_ev enc_ev;
 	struct bt_conn_info info;
 
-	if (bt_conn_is_type(conn, BT_CONN_TYPE_LE)) {
-		const bt_addr_le_t *addr;
+	if (bt_conn_get_info(conn, &info) != 0) {
+		LOG_WRN("Failed to get connection info of %p", conn);
+		return;
+	}
 
-		addr = bt_conn_get_dst(conn);
-		bt_addr_le_copy(&sec_ev.address, addr);
-		bt_addr_le_copy(&bond_ev.address, addr);
-	} else if (IS_ENABLED(CONFIG_BT_CLASSIC) && bt_conn_is_type(conn, BT_CONN_TYPE_BR)) {
-		const bt_addr_t *br_addr;
-
-		br_addr = bt_conn_get_dst_br(conn);
+	if (info.type == BT_CONN_TYPE_LE) {
+		bt_addr_le_copy(&sec_ev.address, info.le.dst);
+		bt_addr_le_copy(&bond_ev.address, info.le.dst);
+		bt_addr_le_copy(&enc_ev.address, info.le.dst);
+	} else if (IS_ENABLED(CONFIG_BT_CLASSIC) && (info.type == BT_CONN_TYPE_BR)) {
 		sec_ev.address.type = BTP_BR_ADDRESS_TYPE;
-		bt_addr_copy(&sec_ev.address.a, br_addr);
+		bt_addr_copy(&sec_ev.address.a, info.br.dst);
 		bond_ev.address.type = BTP_BR_ADDRESS_TYPE;
-		bt_addr_copy(&bond_ev.address.a, br_addr);
+		bt_addr_copy(&bond_ev.address.a, info.br.dst);
+		enc_ev.address.type = BTP_BR_ADDRESS_TYPE;
+		bt_addr_copy(&enc_ev.address.a, info.br.dst);
 	} else {
 		LOG_WRN("Unsupported transport");
 		return;
 	}
 
+	enc_ev.enabled = (err == BT_SECURITY_ERR_SUCCESS) ? true : false;
+	enc_ev.key_size = info.security.enc_key_size;
+	tester_event(BTP_SERVICE_ID_GAP, BTP_GAP_EV_ENCRYPTION_CHANGE, &enc_ev, sizeof(enc_ev));
+
 	switch (err) {
 	case BT_SECURITY_ERR_SUCCESS:
 		/* enum matches BTP values */
@@ -258,8 +265,7 @@ static void le_security_changed(struct bt_conn *conn, bt_security_t level,
 		 *
 		 * This means bond is lost and we restart pairing to re-bond
 		 */
-		if (bt_conn_get_info(conn, &info) == 0 &&
-		    info.role == BT_CONN_ROLE_CENTRAL) {
+		if (info.role == BT_CONN_ROLE_CENTRAL) {
 			LOG_DBG("Bond lost");
 
 			tester_event(BTP_SERVICE_ID_GAP, BTP_GAP_EV_BOND_LOST,