diff --git a/package.json b/package.json
index 3c8bf5d..bc71873 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "postinstall": "cd website && npm install",
     "reset": "git clean -dfx && git reset --hard && npm i",
     "clean": "recursive-delete build && recursive-delete tmp && recursive-delete website/build && recursive-delete website/static/data && recursive-delete website/docs/api",
-    "start-release": "node ./scripts/start-release.mjs"
+    "start-release": "node ./scripts/start-release.js"
   },
   "dependencies": {
     "d3": "7.9.0"
diff --git a/scripts/release-notes.js b/scripts/release-notes.js
index 06eccc4..aa6afa0 100644
--- a/scripts/release-notes.js
+++ b/scripts/release-notes.js
@@ -1,5 +1,5 @@
-const fs = require('fs');
-const path = require('path');
+import fs from 'fs';
+import path from 'path';
 
 const changelog = fs.readFileSync(path.resolve('./CHANGELOG.md'), 'utf8');
 const changelogSeparator = '\n---';
diff --git a/scripts/start-release.mjs b/scripts/start-release.js
similarity index 100%
rename from scripts/start-release.mjs
rename to scripts/start-release.js