diff --git a/package.json b/package.json
index bcb71aa3..457ac75a 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "@babel/generator": "^7.13.9",
     "@babel/traverse": "^7.13.13",
     "@babel/parser": "^7.13.13",
-    "javascript-obfuscator": "^2.11.0",
+    "javascript-obfuscator": "^4.0.0",
     "jju": "^1.3.0",
     "semver": "^5.4.1",
     "source-map": "^0.6.1"