diff --git a/package-lock.json b/package-lock.json
index e18e343..766ee86 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "convert-time-gmt",
-  "version": "0.2.0",
+  "version": "1.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "convert-time-gmt",
-      "version": "0.2.0",
+      "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
         "node-gmt": "^0.0.2"
diff --git a/package.json b/package.json
index 7a1aee7..f0be071 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "convert-time-gmt",
-  "version": "0.2.0",
+  "version": "1.0.0",
   "description": "convert the timestamp in a format dd/mm/yyyy hh:mm:ss",
   "main": "index.js",
   "scripts": {