diff --git a/package-lock.json b/package-lock.json
index e3e27f7..d6b2256 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "espower-typescript",
-  "version": "8.1.2",
+  "version": "8.1.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index fb5a63a..dde650a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "espower-typescript",
   "description": "power-assert instrumentor for TypeScript",
-  "version": "8.1.2",
+  "version": "8.1.3",
   "author": "Teppei Sato <teppeis@gmail.com>",
   "engines": {
     "node": ">=4"