diff --git a/package-lock.json b/package-lock.json
index 8fbc1cd..841e83a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
     "name": "waitasecond",
-    "version": "1.7.0",
+    "version": "1.8.0",
     "lockfileVersion": 1,
     "requires": true,
     "dependencies": {
diff --git a/package.json b/package.json
index e18b561..07f57fa 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "waitasecond",
-    "version": "1.7.0",
+    "version": "1.8.0",
     "description": "Simple tool library for the waiting using Promises.",
     "main": "dist/main.js",
     "typings": "dist/main.d.ts",