diff --git a/test/test_esptool.py b/test/test_esptool.py
index 5c15d18fb..14cf7f0f7 100755
--- a/test/test_esptool.py
+++ b/test/test_esptool.py
@@ -1049,7 +1049,7 @@ class TestLoadRAM(EsptoolTestCase):
 
     def verify_output(self, expected_out: List[bytes]):
         """Verify that at least one element of expected_out is in serial output"""
-        with serial.serial_for_url(arg_port, arg_baud) as p:
+        with serial.serial_for_url(arg_port, arg_baud, rtscts=True) as p:
             p.timeout = 5
             output = p.read(100)
             print(f"Output: {output}")