diff --git a/Documentation/platforms/sim/sim/boards/sim/index.rst b/Documentation/platforms/sim/sim/boards/sim/index.rst
index 682925b145..48d25f6575 100644
--- a/Documentation/platforms/sim/sim/boards/sim/index.rst
+++ b/Documentation/platforms/sim/sim/boards/sim/index.rst
@@ -1299,6 +1299,19 @@ here.  See that discussion above.
 See apps/examples/README.txt for further information about build
 requirements and configuration settings.
 
+toywasm
+-------
+
+This is a configuration with toywasm.
+
+An example usage::
+
+    NuttShell (NSH) NuttX-10.4.0
+    nsh> mount -t hostfs -o fs=/tmp/wasm /mnt
+    nsh> toywasm --wasi /mnt/hello.wasm
+    hello
+    nsh>
+
 udgram
 ------