diff --git a/package.json b/package.json
index f752b86..91576a8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "norwegian-national-id-validator",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Validate norwegian national identity numbers",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",