diff --git a/ctf/CTF-web-to-system-01/package.json b/ctf/CTF-web-to-system-01/package.json
index 05e1adc..e155f00 100644
--- a/ctf/CTF-web-to-system-01/package.json
+++ b/ctf/CTF-web-to-system-01/package.json
@@ -18,7 +18,7 @@
     "express-flash": "0.0.2",
     "express-session": "^1.15.6",
     "flash": "^1.1.0",
-    "mathjs": "3.10.1",
+    "mathjs": "15.2.0",
     "md5": "^2.2.1",
     "morgan": "^1.9.0",
     "mysql2": "^1.4.2",