diff --git a/components/esp_driver_uart/test_apps/rs485/main/test_app_main.c b/components/esp_driver_uart/test_apps/rs485/main/test_app_main.c
index cfdd58655a..ad7c767574 100644
--- a/components/esp_driver_uart/test_apps/rs485/main/test_app_main.c
+++ b/components/esp_driver_uart/test_apps/rs485/main/test_app_main.c
@@ -10,7 +10,7 @@
 #include "esp_heap_caps.h"
 #include "esp_newlib.h"
 
-#define TEST_MEMORY_LEAK_THRESHOLD (200)
+#define TEST_MEMORY_LEAK_THRESHOLD (250)
 
 void setUp(void)
 {