diff --git a/tasmota/include/tasmota_configurations_ESP32.h b/tasmota/include/tasmota_configurations_ESP32.h
index e5bd679c9..d6a691003 100644
--- a/tasmota/include/tasmota_configurations_ESP32.h
+++ b/tasmota/include/tasmota_configurations_ESP32.h
@@ -706,6 +706,9 @@
   #define USE_IR_RECEIVE                         // Support for IR receiver (+5k5 code, 264 iram)
 #define USE_LMT01                                // Add support for TI LMT01 temperature sensor, count pulses on single GPIO (+0k5 code)
 //#define USE_WIEGAND                              // Add support for 24/26/32/34 bit RFID Wiegand interface (D0/D1) (+1k7 code)
+#define USE_SHIFT595                             // Add support for 74xx595 8-bit shift registers (+0k7 code)
+//  #define SHIFT595_INVERT_OUTPUTS false            // [SetOption133] Don't invert outputs of 74x595 shift register
+//  #define SHIFT595_DEVICE_COUNT  1                 // [Shift595DeviceCount] Set the number of connected 74x595 shift registers
 #define USE_TM1638                               // Add support for TM1638 switches copying Switch1 .. Switch8 (+1k code)
 #define USE_HX711                                // Add support for HX711 load cell (+1k5 code)
 //#define USE_HX711_GUI                            // Add optional web GUI to HX711 as scale (+1k8 code)