diff --git a/package-lock.json b/package-lock.json
index 0dd4376..98e8ac0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "shogiground",
-  "version": "0.8.3",
+  "version": "0.8.4",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "shogiground",
-      "version": "0.8.3",
+      "version": "0.8.4",
       "license": "GPL-3.0-or-later",
       "devDependencies": {
         "@rollup/plugin-typescript": "^8",
diff --git a/package.json b/package.json
index 0cbaab5..923da34 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "shogiground",
-  "version": "0.8.3",
+  "version": "0.8.4",
   "description": "lishogi.org shogi ui",
   "type": "module",
   "module": "shogiground.js",