diff --git a/package-lock.json b/package-lock.json
index b55be87..a3481aa 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@yano3nora/ts-utils",
-  "version": "0.18.0",
+  "version": "0.19.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@yano3nora/ts-utils",
-      "version": "0.18.0"
+      "version": "0.19.0"
     }
   }
 }
diff --git a/package.json b/package.json
index f062561..3bdd486 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "private": true,
-  "version": "0.18.0",
+  "version": "0.19.0",
   "name": "@yano3nora/ts-utils",
   "description": "typescript utils.",
   "publishConfig": {