diff --git a/ports/espressif/common-hal/busio/UART.c b/ports/espressif/common-hal/busio/UART.c
index 37e0092726..bee199fb17 100644
--- a/ports/espressif/common-hal/busio/UART.c
+++ b/ports/espressif/common-hal/busio/UART.c
@@ -175,7 +175,7 @@ void common_hal_busio_uart_construct(busio_uart_obj_t *self,
     xTaskCreatePinnedToCore(
         uart_event_task,
         "uart_event_task",
-        configMINIMAL_STACK_SIZE,
+        configMINIMAL_STACK_SIZE + 512,
         self,
         CONFIG_PTHREAD_TASK_PRIO_DEFAULT,
         &self->event_task,