diff --git a/boards/arm/cxd56xx/spresense/README.txt b/boards/arm/cxd56xx/spresense/README.txt
index cb94798cf8..738c5bf51d 100644
--- a/boards/arm/cxd56xx/spresense/README.txt
+++ b/boards/arm/cxd56xx/spresense/README.txt
@@ -25,7 +25,7 @@ Configuration sub-directories
   smp
 
     This is a configuration to run Spresense in SMP mode. To use this
-    configuration, new boot loader which will be released later must be used.
+    configuration, bootloader for Spresense SDK 1.5.0 or later must be intalled.
 
   wifi