diff --git a/package-lock.json b/package-lock.json
index b8cefa6..43355f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "postcode",
-  "version": "5.0.0",
+  "version": "5.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 7c70e1b..42f346b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcode",
-  "version": "5.0.0",
+  "version": "5.1.0",
   "description": "UK Postcode helper methods",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",