diff --git a/components/esp_driver_uart/src/uart.c b/components/esp_driver_uart/src/uart.c
index 444619b1e64..87e106a51c4 100644
--- a/components/esp_driver_uart/src/uart.c
+++ b/components/esp_driver_uart/src/uart.c
@@ -2278,6 +2278,9 @@ esp_err_t uart_set_wakeup_threshold(uart_port_t uart_num, int wakeup_threshold)
                         "wakeup_threshold out of bounds");
     UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
     uart_hal_set_wakeup_edge_thrd(&(uart_context[uart_num].hal), wakeup_threshold);
+    PERIPH_RCC_ATOMIC() {
+        uart_ll_enable_pad_sleep_clock(uart_context[uart_num].hal.dev, true);
+    }
     UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));
     return ESP_OK;
 }