diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index c58df24..d3caa45
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "dependencies": {
     "dotenv": "^4.0.0",
     "express": "^4.15.2",
-    "twilio": "^3.0.0"
+    "twilio": "^4.13.0"
   },
   "devDependencies": {
     "jest": "^19.0.2",