diff --git a/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/mpconfigboard.h b/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/mpconfigboard.h
index 026702da45..537c6d7057 100644
--- a/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/mpconfigboard.h
+++ b/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/mpconfigboard.h
@@ -15,6 +15,7 @@
 
 // Enable externally controlled pins.
 #define MICROPY_HW_PIN_EXT_COUNT        (7)
+#define MICROPY_HW_ADC_EXT_COUNT        (4)
 
 // Enable USB Mass Storage with FatFS filesystem.
 #define MICROPY_HW_USB_MSC              (1)
diff --git a/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/pins.csv b/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/pins.csv
index 47d9b5b043..0b1566cacf 100644
--- a/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/pins.csv
+++ b/ports/rp2/boards/ARDUINO_NANO_RP2040_CONNECT/pins.csv
@@ -26,3 +26,7 @@ D18,EXT_GPIO3
 D19,EXT_GPIO4
 D20,EXT_GPIO5
 D21,EXT_GPIO6
+A4,EXT_GPIO3
+A5,EXT_GPIO4
+A6,EXT_GPIO5
+A7,EXT_GPIO6