diff --git a/extensions/wasm_bindgen/rules_js/test/BUILD.bazel b/extensions/wasm_bindgen/rules_js/test/BUILD.bazel
index b587ca0f01..14896a4a05 100644
--- a/extensions/wasm_bindgen/rules_js/test/BUILD.bazel
+++ b/extensions/wasm_bindgen/rules_js/test/BUILD.bazel
@@ -70,13 +70,13 @@ _WASM_DATA = [
 js_test(
     name = "hello_world_wasm_direct_test",
     data = _WASM_DATA,
-    entry_point = "hello_world_wasm_test.js",
+    entry_point = "hello_world_wasm_test.mjs",
 )
 
 js_library(
     name = "hello_world_wasm_lib",
     srcs = [
-        "hello_world_wasm_test.js",
+        "hello_world_wasm_test.mjs",
     ],
     data = _WASM_DATA,
     deps = [],
diff --git a/extensions/wasm_bindgen/rules_js/test/hello_world_wasm_test.js b/extensions/wasm_bindgen/rules_js/test/hello_world_wasm_test.js
deleted file mode 100644
index 61fc383955..0000000000
--- a/extensions/wasm_bindgen/rules_js/test/hello_world_wasm_test.js
+++ /dev/null
@@ -1,30 +0,0 @@
-"use strict";
-const fs = require("fs");
-const path = require("path");
-const assert = require("assert");
-
-const main = async function (typ, dir) {
-    const wasm_file = path.join(
-        __dirname,
-        "..",
-        dir,
-        "test",
-        "hello_world_" + typ + "_wasm_bindgen",
-        "hello_world_" + typ + "_wasm_bindgen_bg.wasm",
-    );
-    const buf = fs.readFileSync(wasm_file);
-    assert.ok(buf);
-
-    const res = await WebAssembly.instantiate(buf);
-    assert.ok(res);
-    assert.strictEqual(res.instance.exports.double(2), 4);
-};
-
-["bundler", "web", "deno", "nomodules", "nodejs"].forEach((typ) => {
-    main(typ, process.argv.length > 2 ? process.argv[2] : "").catch(function (
-        err,
-    ) {
-        console.error(err);
-        process.exit(1);
-    });
-});
diff --git a/extensions/wasm_bindgen/rules_js/test/hello_world_wasm_test.mjs b/extensions/wasm_bindgen/rules_js/test/hello_world_wasm_test.mjs
new file mode 100644
index 0000000000..1a87967d1d
--- /dev/null
+++ b/extensions/wasm_bindgen/rules_js/test/hello_world_wasm_test.mjs
@@ -0,0 +1,28 @@
+import path from "path";
+import assert from "assert";
+import { fileURLToPath } from "url";
+
+const main = async function (typ, dir) {
+    const filename = fileURLToPath(import.meta.url);
+    const dirname = path.dirname(filename);
+
+    const wasm_module = path.join(
+        dirname,
+        "..",
+        dir,
+        "test",
+        `hello_world_${typ}_wasm_bindgen`,
+        `hello_world_${typ}_wasm_bindgen.js`,
+    );
+
+    const res = await import(wasm_module);
+
+    assert.strictEqual(res.instance.exports.double(2), 4);
+};
+
+["bundler", "web", "deno", "nomodules", "nodejs"].forEach((typ) => {
+    main(typ, process.argv.length > 2 ? process.argv[2] : "").catch((err) => {
+        console.error(err);
+        process.exit(1);
+    });
+});