diff --git a/README.md b/README.md
index 2ddacf99..52453049 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,8 @@ test('should mock modules and local files at same time', async t => {
 
 ### changelog
 
+ * 1.0.0 _Oct.27.2001_
+   * release version 1.0
  * 0.4.2 _Oct.27.2021_
    * export 'load' hook from moduleLoader, required by node v16.12.0+
  * 0.4.1 _Oct.10.2021_
diff --git a/package-lock.json b/package-lock.json
index 552a7da3..1b90bdca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "esmock",
-  "version": "0.4.2",
+  "version": "1.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "esmock",
-      "version": "0.4.2",
+      "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
         "resolvewithplus": "^0.2.0"
diff --git a/package.json b/package.json
index 433473ea..1aa36b0b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "esmock",
-  "version": "0.4.2",
+  "version": "1.0.0",
   "license": "MIT",
   "readmeFilename": "README.md",
   "description": "mock esm modules for unit-tests",