diff --git a/web/raylet.js b/web/raylet.js
index cd9dfe1..1562851 100644
--- a/web/raylet.js
+++ b/web/raylet.js
@@ -1,6 +1,6 @@
 
 languagePluginLoader.then(() => {
-  pyodide.loadPackage(["micropip", "cloudpickle"]).then( () => {
+  pyodide.loadPackage(["micropip", "cloudpickle", "numpy"]).then( () => {
     pyodide.runPythonAsync(`
                     import micropip
                     import js