diff --git a/package-lock.json b/package-lock.json
index ac79876..e1ab26a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cidr-regex",
-  "version": "3.1.1",
+  "version": "4.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "cidr-regex",
-      "version": "3.1.1",
+      "version": "4.0.0",
       "license": "BSD-2-Clause",
       "dependencies": {
         "ip-regex": "^5.0.0"
diff --git a/package.json b/package.json
index d9a34b8..6710ef2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cidr-regex",
-  "version": "3.1.1",
+  "version": "4.0.0",
   "description": "Regular expression for matching IP addresses in CIDR notation",
   "author": "silverwind <me@silverwind.io>",
   "contributors": [