diff --git a/package.json b/package.json
index 20e9f24..52afb97 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "sate24": "git+http://git@gitlab.kodesumber.com/reload97/node-sate24.git",
     "iniparser": "~1.0.5",
     "base64-xor": "~0.10.0",
-    "request": "~2.60.0"
+    "request": "~2.60.0",
+    "mathjs": "~1.7.1"
   }
 }