diff --git a/memo_js/package.json b/memo_js/package.json
index 65d8c449..3a953d4b 100644
--- a/memo_js/package.json
+++ b/memo_js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@atom/memo",
-  "version": "0.20.0",
+  "version": "0.21.0",
   "main": "dist/index.node.js",
   "browser": "dist/index.js",
   "types": "dist/index.d.ts",