diff --git a/lib/version.js b/lib/version.js
index 4e71108c..e52f25be 100644
--- a/lib/version.js
+++ b/lib/version.js
@@ -1,2 +1,2 @@
 // generated by genversion
-module.exports = '3.0.1'
+module.exports = '4.0.0'
diff --git a/package.json b/package.json
index ca0edb65..e07dcb7c 100644
--- a/package.json
+++ b/package.json
@@ -6,28 +6,52 @@
   },
   "contributors": [
     {
-      "name": "Alexander Savin",
-      "website": "https://github.com/apsavin"
+      "name": "Ivan Nikulin",
+      "website": "https://github.com/inikulin"
+    },
+    {
+      "name": "Shivan Kaul Sahib",
+      "website": "https://github.com/ShivanKaul"
+    },
+    {
+      "name": "Clint Ruoho",
+      "website": "https://github.com/ruoho"
     },
     {
       "name": "Ian Livingstone",
       "website": "https://github.com/ianlivingstone"
     },
     {
-      "name": "Ivan Nikulin",
-      "website": "https://github.com/inikulin"
+      "name": "Andrew Waterman",
+      "website": "https://github.com/awaterma"
     },
     {
-      "name": "Lalit Kapoor",
-      "website": "https://github.com/lalitkapoor"
+      "name": "Michael de Libero ",
+      "website": "https://github.com/medelibero-sfdc"
     },
     {
-      "name": "Sam Thompson",
-      "website": "https://github.com/sambthompson"
+      "name": "Jonathan Stewmon",
+      "website": "https://github.com/jstewmon"
+    },
+    {
+      "name": "Miguel Roncancio",
+      "website": "https://github.com/miggs125"
     },
     {
       "name": "Sebastian Mayr",
       "website": "https://github.com/Sebmaster"
+    },
+    {
+      "name": "Alexander Savin",
+      "website": "https://github.com/apsavin"
+    },
+    {
+      "name": "Lalit Kapoor",
+      "website": "https://github.com/lalitkapoor"
+    },
+    {
+      "name": "Sam Thompson",
+      "website": "https://github.com/sambthompson"
     }
   ],
   "license": "BSD-3-Clause",
@@ -43,7 +67,7 @@
     "RFC6265",
     "RFC2965"
   ],
-  "version": "3.0.1",
+  "version": "4.0.0",
   "homepage": "https://github.com/salesforce/tough-cookie",
   "repository": {
     "type": "git",