diff --git a/boards/arm/cxd56xx/spresense/README.txt b/boards/arm/cxd56xx/spresense/README.txt
index 2138fba632..3e6edae0ab 100644
--- a/boards/arm/cxd56xx/spresense/README.txt
+++ b/boards/arm/cxd56xx/spresense/README.txt
@@ -22,6 +22,14 @@ about this board.
 Configuration sub-directories
 -----------------------------
 
+  elf
+
+    This is a configuration to test apps/examples/elf.
+
+  posix_spawn
+
+    This is a configuration to test apps/examples/posix_spawn.
+
   smp
 
     This is a configuration to run Spresense in SMP mode. To use this