diff --git a/package.json b/package.json
index 16f9962..26adf7e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@mdcc/at-json",
-    "version": "1.2.0",
+    "version": "1.2.0-beta.0",
     "description": "A declarative mapper to and from JSON.",
     "main": "dist/cjs/index.cjs",
     "module": "dist/esm/index.mjs",