diff --git a/doc/cli/npm-install.md b/doc/cli/npm-install.md
index 4ff4a47cbcf4e..21c9a169087f4 100644
--- a/doc/cli/npm-install.md
+++ b/doc/cli/npm-install.md
@@ -53,7 +53,9 @@ after packing it up into a tarball (b).
 
     With the `--production` flag (or when the `NODE_ENV` environment variable
     is set to `production`), npm will not install modules listed in
-    `devDependencies`.
+    `devDependencies`. To install all modules listed in both `dependencies` 
+    and `devDependencies` when `NODE_ENV` environment variable is set to `production`, 
+    you can use `--production=false`.
 
     > NOTE: The `--production` flag has no particular meaning when adding a
     dependency to a project.