diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8e64d690..bc7c4b887 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - ignore ratelimits for bots #3439
 - remove `msgs_mdns` references to deleted messages during housekeeping #3387
 - format message lines starting with `>` as quotes #3434
+- node: remove `split2` dependency
 
 ### Fixes
 - set a default error if NDN does not provide an error
diff --git a/node/scripts/generate-constants.js b/node/scripts/generate-constants.js
index 72dc7b613..6f7c25935 100755
--- a/node/scripts/generate-constants.js
+++ b/node/scripts/generate-constants.js
@@ -1,73 +1,69 @@
 #!/usr/bin/env node
-
-const fs = require('fs')
+const fs = require('fs/promises')
 const path = require('path')
-const split = require('split2')
 
 const data = []
 const regex = /^#define\s+(\w+)\s+(\w+)/i
-const header = path.resolve(
-  __dirname,
-  '../../deltachat-ffi/deltachat.h'
-)
+const header = path.resolve(__dirname, '../../deltachat-ffi/deltachat.h')
 
-console.log('Generating constants...')
-
-fs.createReadStream(header)
-  .pipe(split())
-  .on('data', (line) => {
+;(async () => {
+  console.log('Generating constants...')
+  const header_data = await fs.readFile(header, 'utf-8')
+  for (const line of header_data.split(/\r?\n/g)) {
     const match = regex.exec(line)
     if (match) {
       const key = match[1]
       const value = parseInt(match[2])
-      if (isNaN(value)) return
+      if (isNaN(value)) continue
 
       data.push({ key, value })
     }
-  })
-  .on('end', () => {
-    const constants = data
-      .filter(
-        ({ key }) => key.toUpperCase()[0] === key[0] // check if define name is uppercase
-      )
-      .sort((lhs, rhs) => {
-        if (lhs.key < rhs.key) return -1
-        else if (lhs.key > rhs.key) return 1
-        return 0
-      })
-      .map((row) => {
-        return `  ${row.key}: ${row.value}`
-      })
-      .join(',\n')
+  }
 
-    const events = data
-      .sort((lhs, rhs) => {
-        if (lhs.value < rhs.value) return -1
-        else if (lhs.value > rhs.value) return 1
-        return 0
-      })
-      .filter((i) => {
-        return i.key.startsWith('DC_EVENT_')
-      })
-      .map((i) => {
-        return `  ${i.value}: '${i.key}'`
-      })
-      .join(',\n')
+  delete header_data
 
-    // backwards compat
-    fs.writeFileSync(
-      path.resolve(__dirname, '../constants.js'),
-      `// Generated!\n\nmodule.exports = {\n${constants}\n}\n`
-    )
-    // backwards compat
-    fs.writeFileSync(
-      path.resolve(__dirname, '../events.js'),
-      `/* eslint-disable quotes */\n// Generated!\n\nmodule.exports = {\n${events}\n}\n`
+  const constants = data
+    .filter(
+      ({ key }) => key.toUpperCase()[0] === key[0] // check if define name is uppercase
     )
+    .sort((lhs, rhs) => {
+      if (lhs.key < rhs.key) return -1
+      else if (lhs.key > rhs.key) return 1
+      return 0
+    })
+    .map((row) => {
+      return `  ${row.key}: ${row.value}`
+    })
+    .join(',\n')
 
-    fs.writeFileSync(
-      path.resolve(__dirname, '../lib/constants.ts'),
-      `// Generated!\n\nexport enum C {\n${constants.replace(/:/g, ' =')},\n}\n
+  const events = data
+    .sort((lhs, rhs) => {
+      if (lhs.value < rhs.value) return -1
+      else if (lhs.value > rhs.value) return 1
+      return 0
+    })
+    .filter((i) => {
+      return i.key.startsWith('DC_EVENT_')
+    })
+    .map((i) => {
+      return `  ${i.value}: '${i.key}'`
+    })
+    .join(',\n')
+
+  // backwards compat
+  await fs.writeFile(
+    path.resolve(__dirname, '../constants.js'),
+    `// Generated!\n\nmodule.exports = {\n${constants}\n}\n`
+  )
+  // backwards compat
+  await fs.writeFile(
+    path.resolve(__dirname, '../events.js'),
+    `/* eslint-disable quotes */\n// Generated!\n\nmodule.exports = {\n${events}\n}\n`
+  )
+
+  await fs.writeFile(
+    path.resolve(__dirname, '../lib/constants.ts'),
+    `// Generated!\n\nexport enum C {\n${constants.replace(/:/g, ' =')},\n}\n
 // Generated!\n\nexport const EventId2EventName: { [key: number]: string } = {\n${events},\n}\n`
-    )
-  })
+  )
+})()
diff --git a/package.json b/package.json
index c07a2ddcf..a20b51880 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,6 @@
     "prebuildify": "^3.0.0",
     "prebuildify-ci": "^1.0.4",
     "prettier": "^2.0.5",
-    "split2": "^4.1.0",
     "typedoc": "^0.17.0",
     "typescript": "^3.9.10"
   },