diff --git a/server/package-lock.json b/server/package-lock.json
index 58b8f6c08..b5c9f5034 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@scrypted/server",
-  "version": "0.7.46",
+  "version": "0.7.47",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@scrypted/server",
-      "version": "0.7.46",
+      "version": "0.7.47",
       "license": "ISC",
       "dependencies": {
         "@mapbox/node-pre-gyp": "^1.0.10",
diff --git a/server/src/plugin/plugin-npm-dependencies.ts b/server/src/plugin/plugin-npm-dependencies.ts
index e6400efaf..b16449fd9 100644
--- a/server/src/plugin/plugin-npm-dependencies.ts
+++ b/server/src/plugin/plugin-npm-dependencies.ts
@@ -9,6 +9,19 @@ import rimraf from "rimraf";
 import semver from 'semver';
 import { ensurePluginVolume } from "./plugin-volume";
 
+export function defaultNpmExec(args: string[], options: child_process.SpawnOptions) {
+    let npm = 'npm';
+    if (os.platform() === 'win32')
+        npm += '.cmd';
+    const cp = child_process.spawn(npm,  args, options);
+    return cp;
+}
+
+let npmExecFunction = defaultNpmExec;
+export function setNpmExecFunction(f: typeof npmExecFunction) {
+    npmExecFunction = f;
+}
+
 export function getPluginNodePath(name: string) {
     const pluginVolume = ensurePluginVolume(name);
     const nodeMajorVersion = semver.parse(process.version).major;
@@ -56,10 +69,7 @@ export async function installOptionalDependencies(console: Console, packageJson:
         mkdirp.sync(nodePrefix);
         fs.writeFileSync(packageJsonPath, JSON.stringify(reduced));
 
-        let npm = 'npm';
-        if (os.platform() === 'win32')
-            npm += '.cmd';
-        const cp = child_process.spawn(npm, ['--prefix', nodePrefix, 'install'], {
+        const cp = npmExecFunction(['--prefix', nodePrefix, 'install'], {
             cwd: nodePrefix,
             stdio: 'inherit',
         });