diff --git a/package.json b/package.json
index ca02a36..da32ecd 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "istanbul": "0.4.5",
     "mocha": "5.2.0",
     "mocha-eslint": "4.1.0",
-    "portfinder": "1.0.17"
+    "portfinder": "1.0.18"
   },
   "keywords": [
     "smpp",