diff --git a/changelog.md b/changelog.md
index 2ec2e28..32f8b1a 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,12 @@
+## V2.5.0
+
+- upgrade `@parcel/css` to `1.12.0`
+- validate class name, js keywords are considered to be invalid, e.g. `.default { } .const { }` will throw error during building
+
+## V2.4.0
+
+- Add filter option: Regular expression used to match CSS module files by @christianvuerings in #40
+
 ## V2.3.1
 
 - Fix [issue#33](https://github.com/indooorsman/esbuild-css-modules-plugin/issues/33)
@@ -5,7 +14,7 @@
 ## V2.3.0
 
 - **V2**: upgrade `@parcel/css` to `1.9.0`
-- **V2**: add a new option `v2CssModulesOption`, refer to <https://github.com/parcel-bundler/parcel-css/releases/tag/v1.9.0> 
+- **V2**: add a new option `v2CssModulesOption`, refer to <https://github.com/parcel-bundler/parcel-css/releases/tag/v1.9.0>
 
 ## V2.2.16
 
@@ -13,32 +22,39 @@
 
 - **V2**: pass relative path to `@parcel/css` as filename to keep hash stable in different machines
 
-
 ## V2.2.13
+
 - **[v2]** [bugfix] exports of entry js are lost with auto inject
+
 ## V2.2.12
+
 - **[v2]** only use cache in watch mode
 - **[v2]** refine inject logic
 - **[v2]** add example of custom inject to tests
 
 ## V2.2.11
+
 - replace `process.memoryUsage.rss()` to `process.memoryUsage().rss` to support Nodejs<15.6.0
 
 ## V2.2.10
+
 - **[v2]** refine cache logic
 - **[v2]** replace fs sync methods with promises
 
 ## V2.2.8
+
 - **[v2]** refine some logs
 - **[v2]** make hash of outputs stable
 - **[v2]** support `entryPoints` as object
 
 ## V2.2.6
+
 - **[v2]** refine some logs
 - **[v2]** handle `onResolve` for `.modules.css` files to add `sideEffects: true` & `namespace` to the resolve result
 - **[v2]** better support `watch` mode
 
 ## V2.2.5
+
 - refactor a lot, **v2** will not generate temporary folders/files anymore
 - **v2** now support auto inject generated css into page
 - inject for and only for **v2** can be set to a css selector of the element which you want to inject css to, if the element can't be found then inject to document.head
@@ -50,4 +66,4 @@
 ## V2.1.3:
 
 - support `@import url(./xxx/xxx.css)` in v2 (path can't be remote url)
-- upgrade `@parcel/css` to `1.3.1`
\ No newline at end of file
+- upgrade `@parcel/css` to `1.3.1`
diff --git a/lib/plugin.js b/lib/plugin.js
index cf7e439..6bb6984 100644
--- a/lib/plugin.js
+++ b/lib/plugin.js
@@ -12,7 +12,8 @@ const {
   getModulesCssRegExp,
   getBuiltModulesCssRegExp,
   getRelativePath,
-  getBuildId
+  getBuildId,
+  validateNamedExport
 } = require('./utils.js');
 const cssHandler = require('@parcel/css');
 const camelCase = require('lodash/camelCase');
@@ -87,9 +88,16 @@ export default new Proxy(${classNamesMapString}, {
   `
     : `export default ${classNamesMapString};`;
 
-  const namedExportStatements = Object.entries(cssModulesJSON).map(
-    ([camelCaseClassName, className]) => `export const ${camelCaseClassName} = "${className}";`
-  ).join('\n');
+  const namedExportStatements = Object.entries(cssModulesJSON)
+    .map(([camelCaseClassName, className]) => {
+      if (!validateNamedExport(camelCaseClassName)) {
+        throw new Error(
+          `the class name "${camelCaseClassName}" in file ${fullPath} is a reserved keyword in javascript, please change it to someother word to avoid potential errors`
+        );
+      }
+      return `export const ${camelCaseClassName} = "${className}";`;
+    })
+    .join('\n');
 
   const js = `${importStatement}\n${exportStatement};\n${namedExportStatements}`;
 
diff --git a/lib/utils.js b/lib/utils.js
index 68f1560..bf88b70 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -1,6 +1,7 @@
 const path = require('path');
 const { createHash } = require('crypto');
 const { readFile } = require('fs/promises');
+const fs = require('fs');
 const pluginName = require('../package.json').name.toLowerCase();
 const pluginNamespace = `${pluginName}-namespace`;
 const buildingCssSuffix = `?${pluginName}-building`;
@@ -13,8 +14,8 @@ const builtCssSuffixRegExp = builtCssSuffix.replace('?', '\\?').replace(/\-/g, '
  * @returns {RegExp}
  */
 const getModulesCssRegExp = (options) => {
-  return options.filter ?? /\.modules?\.css$/i
-}
+  return options.filter ?? /\.modules?\.css$/i;
+};
 
 /**
  * getBuiltModulesCssRegExp
@@ -23,9 +24,11 @@ const getModulesCssRegExp = (options) => {
  */
 const getBuiltModulesCssRegExp = (options) => {
   const baseRegExp = getModulesCssRegExp(options);
-  const baseRegExpSource = baseRegExp.source.endsWith('$') ? baseRegExp.source.slice(0, -1) : baseRegExp.source;
+  const baseRegExpSource = baseRegExp.source.endsWith('$')
+    ? baseRegExp.source.slice(0, -1)
+    : baseRegExp.source;
   return new RegExp(`${baseRegExpSource}${builtCssSuffixRegExp}$`, 'i');
-}
+};
 
 /**
  * getLogger
@@ -103,6 +106,22 @@ const getRootDir = (build) => {
   return rootDir;
 };
 
+/**
+ * getPackageVersion
+ * @param {import('..').Build} build
+ * @returns {string}
+ */
+const getPackageVersion = (build) => {
+  const rootDir = getRootDir(build);
+  const packageJsonFile = path.resolve(rootDir, './package.json');
+  try {
+    fs.accessSync(packageJsonFile, fs.constants.R_OK);
+    return require(packageJsonFile).version ?? 'unknown';
+  } catch (error) {
+    return 'unknown';
+  }
+};
+
 /**
  * getRelativePath
  * @description get relative path from build root
@@ -127,6 +146,7 @@ const getRelativePath = (build, to) => {
 const getBuildId = async (build) => {
   const { entryPoints } = build.initialOptions;
   const buildRoot = getRootDir(build);
+  const packageVersion = getPackageVersion(build);
   let entries = [];
   if (Array.isArray(entryPoints)) {
     entries = [...entryPoints];
@@ -137,7 +157,7 @@ const getBuildId = async (build) => {
         entries.push(entryPoints[k]);
       });
   }
-  const entryContents = (
+  const entryContents = packageVersion + (
     await Promise.all(
       entries.map(async (p) => {
         const absPath = path.isAbsolute(p) ? p : path.resolve(buildRoot, p);
@@ -148,6 +168,63 @@ const getBuildId = async (build) => {
   return createHash('sha256').update(entryContents).digest('hex');
 };
 
+const jsKeywords = [
+  'await',
+  'break',
+  'case',
+  'catch',
+  'class',
+  'const',
+  'continue',
+  'debugger',
+  'default',
+  'delete',
+  'do',
+  'else',
+  'enum',
+  'export',
+  'extends',
+  'false',
+  'finally',
+  'for',
+  'function',
+  'if',
+  'implements',
+  'import',
+  'in',
+  'instanceof',
+  'interface',
+  'let',
+  'new',
+  'null',
+  'package',
+  'private',
+  'protected',
+  'public',
+  'return',
+  'super',
+  'switch',
+  'static',
+  'this',
+  'throw',
+  'try',
+  'true',
+  'typeof',
+  'var',
+  'void',
+  'while',
+  'with',
+  'yield'
+];
+
+/**
+ * @param {string} name
+ * @returns {boolean}
+ */
+const validateNamedExport = (name) => {
+  return !jsKeywords.includes(name);
+};
+
 module.exports = {
   pluginName,
   pluginNamespace,
@@ -159,5 +236,7 @@ module.exports = {
   getBuiltModulesCssRegExp,
   buildingCssSuffix,
   getRelativePath,
-  getBuildId
+  getBuildId,
+  validateNamedExport,
+  getPackageVersion
 };
diff --git a/package.json b/package.json
index f7c7008..4e0f274 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "esbuild-css-modules-plugin",
-  "version": "2.4.0",
+  "version": "2.5.0",
   "description": "A esbuild plugin to bundle css modules into js(x)/ts(x).",
   "main": "./index.js",
   "types": "./index.d.ts",
@@ -28,7 +28,7 @@
     "esbuild": "^0.14.38"
   },
   "dependencies": {
-    "@parcel/css": "1.9.0",
+    "@parcel/css": "^1.12.0",
     "fs-extra": "^10.1.0",
     "lodash": "^4.17.21",
     "postcss": "^8.4.12",
diff --git a/readme.md b/readme.md
index 2072429..45f25a2 100644
--- a/readme.md
+++ b/readme.md
@@ -1,6 +1,6 @@
 # esbuild-css-modules-plugin
 
-[![npm version](https://img.shields.io/npm/v/esbuild-css-modules-plugin.svg?style=flat)](https://www.npmjs.com/package/esbuild-css-modules-plugin)
+[![npm version](https://img.shields.io/npm/v/esbuild-css-modules-plugin.svg?v=2.5.0)](https://www.npmjs.com/package/esbuild-css-modules-plugin)
 [![Test](https://github.com/indooorsman/esbuild-css-modules-plugin/actions/workflows/test.yml/badge.svg)](https://github.com/indooorsman/esbuild-css-modules-plugin/actions/workflows/test.yml)
 
 A esbuild plugin to bundle css modules into js(x)/ts(x).