diff --git a/doc/api/cli.md b/doc/api/cli.md
index 0cbdf4a12d40e1..54ede74e6e4c37 100644
--- a/doc/api/cli.md
+++ b/doc/api/cli.md
@@ -81,6 +81,13 @@ added: v9.6.0
 
 Enable experimental ES Module support in the `vm` module.
 
+### `--experimental-worker`
+<!-- YAML
+added: v10.5.0
+-->
+
+Enable experimental worker threads using the `worker_threads` module.
+
 ### `--force-fips`
 <!-- YAML
 added: v6.0.0
diff --git a/doc/api/worker_threads.md b/doc/api/worker_threads.md
index 27a77ba6d441de..b56fb32aec6525 100644
--- a/doc/api/worker_threads.md
+++ b/doc/api/worker_threads.md
@@ -6,7 +6,7 @@
 
 The `worker` module provides a way to create multiple environments running
 on independent threads, and to create message channels between them. It
-can be accessed using:
+can be accessed using the `--experimental-worker` flag and:
 
 ```js
 const worker = require('worker_threads');
diff --git a/doc/node.1 b/doc/node.1
index 5882b63e18d6a5..ac3a8d48a898db 100644
--- a/doc/node.1
+++ b/doc/node.1
@@ -91,6 +91,9 @@ keyword support in REPL.
 .It Fl -experimental-vm-modules
 Enable experimental ES module support in VM module.
 .
+.It Fl -experimental-worker
+Enable experimental worker threads using worker_threads module.
+.
 .It Fl -force-fips
 Force FIPS-compliant crypto on startup
 (Cannot be disabled from script code).