diff --git a/Cargo.toml b/Cargo.toml
index a08a0573..15732f5f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,3 +16,7 @@ codegen-units = 1
 lto = true
 overflow-checks = false
 strip = 'symbols'
+
+[patch.crates-io]
+napi = { git = "https://github.com/napi-rs/napi-rs", branch = "remove-thread-local" }
+napi-derive = { git = "https://github.com/napi-rs/napi-rs", branch = "remove-thread-local" }
diff --git a/ava.config.js b/ava.config.js
index 51827bfb..8fd32117 100644
--- a/ava.config.js
+++ b/ava.config.js
@@ -1,6 +1,6 @@
 module.exports = {
 extensions: ['ts'],
- workerThreads: false,
+ workerThreads: true,
 require: ['@swc-node/register'],
 files: ['packages/**/*.spec.ts'],
 timeout: '3m',
</div><div class="naked_ctrl">
<form action="/index.cgi/larger-text" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/napi-rs/node-rs/compare/main...check-thread-worker.diff">(-&gt;オリジナル)</a>
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<option value="mobile">モバイル</option>
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<input type="submit" value="表示" />
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