--- a/package.json
+++ b/package.json
@@ -9,7 +9,6 @@
     "debug": "~4.3.4",
     "jsmodbus": "~4.0.6",
     "line-by-line": "~0.1.6",
-    "modbus-serial": "~8.0.10",
     "source-map-support": "~0.5.21",
     "underscore": "~1.13.6",
     "vm2": "~3.9.15"