diff --git a/site/decodal-site/src/scripts/playground.js b/site/decodal-site/src/scripts/playground.js
index a1cc8e1..f76166c 100644
--- a/site/decodal-site/src/scripts/playground.js
+++ b/site/decodal-site/src/scripts/playground.js
@@ -1,5 +1,7 @@
 import initRuntime, { evaluateProject } from 'decodal-wasm';
+import runtimeWasmUrl from 'decodal-wasm/decodal_wasm_bg.wasm?url';
 import initTools, { formatSource } from 'decodal-language-tools';
+import toolsWasmUrl from 'decodal-language-tools/decodal_language_tools_bg.wasm?url';
 import { EditorView, basicSetup } from 'codemirror';
 import { keymap } from '@codemirror/view';
 import { decodal } from 'decodal-codemirror';
@@ -243,7 +245,7 @@ function compareNodes(a, b) {
 }
 
 try {
-  await Promise.all([initRuntime(), initTools()]);
+  await Promise.all([initRuntime(runtimeWasmUrl), initTools(toolsWasmUrl)]);
   run.disabled = false;
   formatButton.disabled = false;
   status.textContent = '';