diff --git a/pymysql/constants/COMMAND.py b/pymysql/constants/COMMAND.py
index 4a757da..1da2755 100644
--- a/pymysql/constants/COMMAND.py
+++ b/pymysql/constants/COMMAND.py
@@ -21,3 +21,13 @@ COM_BINLOG_DUMP = 0x12
 COM_TABLE_DUMP = 0x13
 COM_CONNECT_OUT = 0x14
 COM_REGISTER_SLAVE = 0x15
+COM_STMT_PREPARE = 0x16
+COM_STMT_EXECUTE = 0x17
+COM_STMT_SEND_LONG_DATA = 0x18
+COM_STMT_CLOSE = 0x19
+COM_STMT_RESET = 0x1a
+COM_SET_OPTION = 0x1b
+COM_STMT_FETCH = 0x1c
+COM_DAEMON = 0x1d
+COM_BINLOG_DUMP_GTID = 0x1e
+COM_END = 0x1f