diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index c58df24..c512395
--- a/package.json
+++ b/package.json
@@ -32,6 +32,6 @@
   },
   "devDependencies": {
     "jest": "^19.0.2",
-    "jsonwebtoken": "^7.4.0"
+    "jsonwebtoken": "^9.0.0"
   }
 }