diff --git a/doc/languages-frameworks/javascript.section.md b/doc/languages-frameworks/javascript.section.md
index 7fd84ed0e65e..0a2099b0a6b1 100644
--- a/doc/languages-frameworks/javascript.section.md
+++ b/doc/languages-frameworks/javascript.section.md
@@ -196,12 +196,14 @@ buildNpmPackage rec {
 * `npmDepsHash`: The output hash of the dependencies for this project. Can be calculated in advance with [`prefetch-npm-deps`](#javascript-buildNpmPackage-prefetch-npm-deps).
 * `makeCacheWritable`: Whether to make the cache writable prior to installing dependencies. Don't set this unless npm tries to write to the cache directory, as it can slow down the build.
 * `npmBuildScript`: The script to run to build the project. Defaults to `"build"`.
+* `npmWorkspace`: The workspace directory within the project to build and install.
 * `dontNpmBuild`: Option to disable running the build script. Set to `true` if the package does not have a build script. Defaults to `false`. Alternatively, setting `buildPhase` explicitly also disables this.
 * `dontNpmInstall`: Option to disable running `npm install`. Defaults to `false`. Alternatively, setting `installPhase` explicitly also disables this.
 * `npmFlags`: Flags to pass to all npm commands.
-* `npmInstallFlags`: Flags to pass to `npm ci` and `npm prune`.
+* `npmInstallFlags`: Flags to pass to `npm ci`.
 * `npmBuildFlags`: Flags to pass to `npm run ${npmBuildScript}`.
 * `npmPackFlags`: Flags to pass to `npm pack`.
+* `npmPruneFlags`: Flags to pass to `npm prune`. Defaults to the value of `npmInstallFlags`.
 
 #### prefetch-npm-deps {#javascript-buildNpmPackage-prefetch-npm-deps}