diff --git a/include/btstack/hci_cmds.h b/include/btstack/hci_cmds.h
index f925490f4..cde04f5da 100644
--- a/include/btstack/hci_cmds.h
+++ b/include/btstack/hci_cmds.h
@@ -74,7 +74,7 @@ extern "C" {
 #define HCI_EVENT_DISCONNECTION_COMPLETE		      	   0x05
 #define HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT            0x06
 #define HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE	           0x07
-#define HCI_EVENT_ENCRIPTION_CHANGE                        0x08
+#define HCI_EVENT_ENCRYPTION_CHANGE                        0x08
 #define HCI_EVENT_CHANGE_CONNECTION_LINK_KEY_COMPLETE      0x09
 #define HCI_EVENT_MASTER_LINK_KEY_COMPLETE                 0x0A
 #define HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE  0x0B
@@ -213,6 +213,8 @@ extern const hci_cmd_t btstack_set_discoverable;
 	
 extern const hci_cmd_t hci_accept_connection_request;
 extern const hci_cmd_t hci_authentication_requested;
+extern const hci_cmd_t hci_set_connection_encryption;
+extern const hci_cmd_t hci_change_connection_link_key;
 extern const hci_cmd_t hci_create_connection;
 extern const hci_cmd_t hci_create_connection_cancel;
 extern const hci_cmd_t hci_delete_stored_link_key;
diff --git a/src/hci_cmds.c b/src/hci_cmds.c
index 4d51da65f..eaf669928 100644
--- a/src/hci_cmds.c
+++ b/src/hci_cmds.c
@@ -208,6 +208,14 @@ const hci_cmd_t hci_authentication_requested = {
 OPCODE(OGF_LINK_CONTROL, 0x11), "H"
 // Handle
 };
+const hci_cmd_t hci_set_connection_encryption = {
+OPCODE(OGF_LINK_CONTROL, 0x13), "H1"
+// Handle, Encryption_Enable
+};
+const hci_cmd_t hci_change_connection_link_key = {
+OPCODE(OGF_LINK_CONTROL, 0x15), "H"
+// Handle
+};
 const hci_cmd_t hci_remote_name_request = {
 OPCODE(OGF_LINK_CONTROL, 0x19), "B112"
 // BD_ADDR, Page_Scan_Repetition_Mode, Reserved, Clock_Offset