diff --git a/package.json b/package.json
index 9fa3ed1..199a4cb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bcp-47-normalize",
-  "version": "1.1.1",
+  "version": "2.0.0",
   "description": "Normalize, canonicalize, and format BCP 47 tags",
   "license": "MIT",
   "keywords": [