diff --git a/lib/fs.js b/lib/fs.js
index 6c2ec2d..6d094da 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -5,7 +5,7 @@ const fs = require('graceful-fs');
 const { dirname, join, extname, basename } = require('path');
 const fsPromises = fs.promises;
 const chokidar = require('chokidar');
-const escapeRegExp = require('escape-string-regexp');
+const { escapeRegExp } = require('hexo-util');
 
 const rEOL = /\r\n/g;
 
diff --git a/package.json b/package.json
index ed4b1dd..c40d16d 100644
--- a/package.json
+++ b/package.json
@@ -30,8 +30,8 @@
   "dependencies": {
     "bluebird": "^3.5.1",
     "chokidar": "^3.0.0",
-    "escape-string-regexp": "^2.0.0",
-    "graceful-fs": "^4.1.11"
+    "graceful-fs": "^4.1.11",
+    "hexo-util": "^1.8.1"
   },
   "devDependencies": {
     "chai": "^4.1.2",