diff --git a/flake.nix b/flake.nix
index 9090d0cb..b88d80f1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -60,7 +60,7 @@
           postBuild = ''
             npm run pkg -- \
               --output=out \
-              --bin=dist/polykey.js \
+              --bin=dist/polykey.mjs \
               --node-version=${utils.nodeVersion} \
               --platform=${platform} \
               --arch=${arch}
diff --git a/npmDepsHash b/npmDepsHash
index 81c8362a..bd9cd2ed 100644
--- a/npmDepsHash
+++ b/npmDepsHash
@@ -1 +1 @@
-sha256-seF0UmaonXcbXIQQMq1ZrtoYm1GmIwfK2+lUZB12jYU=
+sha256-S4tLgjpsyta1Jo5Dv0+YTMRf2//EHEWpuxHWJI7FjK0=
diff --git a/package-lock.json b/package-lock.json
index 8cae2c67..92d52103 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "polykey-cli",
-  "version": "0.18.3",
+  "version": "0.18.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "polykey-cli",
-      "version": "0.18.3",
+      "version": "0.18.4",
       "license": "GPL-3.0",
       "bin": {
         "pk": "dist/polykey.mjs",
diff --git a/package.json b/package.json
index 6eebe219..40d88eea 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "polykey-cli",
-  "version": "0.18.3",
+  "version": "0.18.4",
   "homepage": "https://polykey.com",
   "author": "Roger Qiu",
   "contributors": [
@@ -105,7 +105,7 @@
       "node_modules/sodium-native/prebuilds/win32-x64/node.napi.node"
     ],
     "scripts": [
-      "dist/polykeyWorkerManifest.mjs"
+      "dist/polykeyWorkerManifest.js"
     ]
   },
   "scripts": {
diff --git a/scripts/build.mjs b/scripts/build.mjs
index 066b43b7..1de1ed5f 100755
--- a/scripts/build.mjs
+++ b/scripts/build.mjs
@@ -92,6 +92,28 @@ async function main(argv = process.argv) {
   console.error('Running esbuild:');
   console.error(esbuildOptions);
   await esbuild.build(esbuildOptions);
+  // Rename worker script
+  console.error('Renaming worker script');
+  childProcess.execFileSync(
+    'mv',
+    ['dist/polykeyWorkerManifest.mjs', 'dist/polykeyWorkerManifest.js'],
+    {
+      stdio: ['inherit', 'inherit', 'inherit'],
+      windowsHide: true,
+      encoding: 'utf-8',
+      shell: platform === 'win32' ? true : false,
+    },
+  );
+  childProcess.execFileSync(
+    'mv',
+    ['dist/polykeyWorkerManifest.mjs.map', 'dist/polykeyWorkerManifest.js.map'],
+    {
+      stdio: ['inherit', 'inherit', 'inherit'],
+      windowsHide: true,
+      encoding: 'utf-8',
+      shell: platform === 'win32' ? true : false,
+    },
+  );
 }
 /* eslint-enable no-console */