diff --git a/package.json b/package.json
index 558b605..9bed58d 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "build:dockerimage": "docker build -t mydockerimage  --build-arg USER_ID=$(id -u) --build-arg GROUP_ID=$(id -g) . ",
     "build:dockerimage_no_cache": "docker build -t mydockerimage  --build-arg USER_ID=$(id -u) --build-arg GROUP_ID=$(id -g) --no-cache . ",
     "build:emscripten": "echo $(pwd) && docker run --rm -v $(pwd):/src    -u $(id -u):$(id -g)  mydockerimage    ./build.sh",
-    "copy-files": "copyfiles -u 1 src/xeus_kernel.wasm  src/xeus_kernel.worker.js src/xeus_kernel.js   src/python_data.js src/python_data.data  lib",
+    "copy-files": "copyfiles -u 1 src/xpython_wasm.wasm  src/xpython_wasm.worker.js src/xpython_wasm.js   src/python_data.js src/python_data.data  lib",
     "build:wasm": "jlpm run build:dockerimage && jlpm run build:emscripten",
     "build:wasm_no_cache": "jlpm run build:dockerimage_no_cache && jlpm run build:emscripten",
     "build": "jlpm run build:lib && jlpm run copy-files && jlpm run build:labextension:dev",
diff --git a/pyproject.toml b/pyproject.toml
index cf8cb18..14d3fc2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,4 +14,4 @@ build_cmd = "build:prod"
 npm = ["jlpm"]
 
 [tool.check-manifest]
-ignore = ["jupyterlite_xeus_python/labextension/**", "yarn.lock", ".*", "package-lock.json", "Dockerfile", "src/xeus_python.worker.js", "src/xeus_kernel.js", "src/xeus_kernel.wasm", "*.sh"]
+ignore = ["jupyterlite_xeus_python/labextension/**", "yarn.lock", ".*", "package-lock.json", "Dockerfile", "src/xeus_python.worker.js", "src/xpython_wasm.js", "src/xpython_wasm.wasm", "*.sh"]
diff --git a/setup.py b/setup.py
index daf388d..39a5554 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@
     .replace("-alpha.", "a")
     .replace("-beta.", "b")
     .replace("-rc.", "rc")
-) 
+)
 
 setup_args = dict(
     name=name,
diff --git a/src/worker.ts b/src/worker.ts
index 9c1112f..cbb5935 100644
--- a/src/worker.ts
+++ b/src/worker.ts
@@ -14,7 +14,7 @@ globalThis.Module = {}
 
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore
-import createXeusModule from './xeus_kernel.js';
+import createXeusModule from './xpython_wasm.js';
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore
 // import populate from './python_data.js';
@@ -65,19 +65,14 @@ ctx.get_stdin = get_stdin;
 let resolveInputReply: any;
 
 
-function sleep(ms:number) {
-    return new Promise(resolve => setTimeout(resolve, ms));
-}
-
 async function loadCppModule(moduleFactory: any): Promise<any> {
   const options: any = {};
   globalThis.Module = await moduleFactory(options);
-  
+
   // eslint-disable-next-line @typescript-eslint/ban-ts-comment
   // @ts-ignore
   await import("./python_data");
 
-  await sleep(2000)
   await waitRunDependency();
   raw_xkernel = new globalThis.Module.xkernel();
   raw_xserver = raw_xkernel.get_server();
diff --git a/webpack.config.js b/webpack.config.js
index 0827864..28b10ed 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -5,7 +5,7 @@ module.exports = {
     new CopyPlugin({
       patterns: [
         {
-          from: 'src/xeus_kernel.wasm',
+          from: 'src/xpython_wasm.wasm',
           to: '.'
         },
         {