diff --git a/README.md b/README.md
index fed4589..274cb16 100644
--- a/README.md
+++ b/README.md
@@ -53,11 +53,11 @@ The `testnet` script will load `config/local-testnet.yaml` and `config/testnet.y
 
 ## CKB Node Restart Script
 
-Because of unstable network, sometimes the CKB node may disconnect from peers and stop syncing blocks. To solve this problem, the script `scripts/ckb-node-monit.js` can restart the CKB node automatically:
+Because of unstable network, sometimes the CKB node may disconnect from peers and stop syncing blocks. To solve this problem, the script `scripts/ckb-node-monit.mjs` can restart the CKB node automatically:
 
 ```bash
 pm2 start --cron-restart="* * * * *" \
-./scripts/ckb-node-monit.js -- \
+./scripts/ckb-node-monit.mjs -- \
 --log /path_to_ckb_node_log_dir/run.log \
 --data ./ckb-node-status.json
 ```
diff --git a/scripts/ckb-node-monit.js b/scripts/ckb-node-monit.mjs
similarity index 96%
rename from scripts/ckb-node-monit.js
rename to scripts/ckb-node-monit.mjs
index 465920c..435c116 100644
--- a/scripts/ckb-node-monit.js
+++ b/scripts/ckb-node-monit.mjs
@@ -1,13 +1,13 @@
 // Start command:
 // pm2 start --cron-restart="* * * * *" \
-// ./ckb-node-monit.js -- \
+// ./ckb-node-monit.mjs -- \
 // --log /path_to_ckb_node_log_dir/run.log \
 // --data ./ckb-node-status.json
 
 
-const fs = require('fs');
-const readline = require('readline');
-const { spawn } = require('child_process');
+import fs from 'fs'
+import readline from 'readline'
+import { spawn } from 'child_process'
 
 const newBlockTimeout = 180 * 1000; // 3 minutes
 const restartTimeout = 300 * 1000; // 5 minutes