title: Angular: Upgrading to version 5 error: Version of @angular/compiler-cli needs to be 2.3.1 or greater. Current version is "5.0.0"
body: <p><strong>Disclaimer</strong></p>
  
  <p><em>Potential</em> duplicate of <a href="https://stackoverflow.com/questions/47104188/migrating-angular-4-x-to-angular-5">this</a>, however the question in detail does not show the specific error message in question, thus it is ambiguous and unhelpful. I was not able to find that at all when putting in my error in Google, and that's cause his question doesn't contain the error anywhere. </p>
  
  <p>Please do not close this question unless the other question is edited for clarity, as there are no other results for the error in question.</p>
  
  <hr>
  
  <p>Trying to run <code>ng serve</code> after upgrading to v5, but getting some errors. Anyone know what's up? My <code>@angular/compiler-cli</code> is 5.0.0 according to package.json...not sure why it's saying 5.0.0 is less than 2.3.1.</p>
  
  <p>This was my upgrade command:</p>
  
  <pre><code>npm install @angular/{animations,common,compiler,compiler-cli,core,forms,http,platform-browser,platform-browser-dynamic,platform-server,router}@5.0.0
  </code></pre>
  
  <p>I received the following error:</p>
  
  <pre><code>$ ng serve
  Your global Angular CLI version (1.5.0) is greater than your local
  version (1.0.0). The local Angular CLI version is used.
  
  To disable this warning use "ng set --global warnings.versionMismatch=false".
  Version of @angular/compiler-cli needs to be 2.3.1 or greater. Current version is "5.0.0".
  Error: Version of @angular/compiler-cli needs to be 2.3.1 or greater. Current version is "5.0.0".
      at Object.&lt;anonymous&gt; (REDACTED/node_modules/@ngtools/webpack/src/index.js:27:11)
      at Module._compile (module.js:624:30)
      at Object.Module._extensions..js (module.js:635:10)
      at Module.load (module.js:545:32)
      at tryModuleLoad (module.js:508:12)
      at Function.Module._load (module.js:500:3)
      at Module.require (module.js:568:17)
      at require (internal/module.js:11:18)
      at Object.&lt;anonymous&gt; (REDACTED/node_modules/@angular/cli/tasks/eject.js:10:19)
      at Module._compile (module.js:624:30)
      at Object.Module._extensions..js (module.js:635:10)
      at Module.load (module.js:545:32)
      at tryModuleLoad (module.js:508:12)
      at Function.Module._load (module.js:500:3)
      at Module.require (module.js:568:17)
      at require (internal/module.js:11:18)
  </code></pre>
  
  <p>Here is package.json:</p>
  
  <pre><code>{
      "name": "App",
      "version": "0.0.0",
      "license": "MIT",
      "scripts": {
          "ng": "ng",
          "start": "ng serve",
          "start-hmr": "ng serve --hmr -e=hmr",
          "build": "ng build",
          "test": "ng test",
          "lint": "ng lint",
          "e2e": "ng e2e"
      },
      "private": true,
      "dependencies": {
          "@angular/animations": "^5.0.0",
          "@angular/common": "^5.0.0",
          "@angular/compiler": "^5.0.0",
          "@angular/core": "^5.0.0",
          "@angular/forms": "^5.0.0",
          "@angular/http": "^5.0.0",
          "@angular/platform-browser": "^5.0.0",
          "@angular/platform-browser-dynamic": "^5.0.0",
          "@angular/platform-server": "^5.0.0",
          "@angular/router": "^5.0.0",
          "@angularclass/hmr": "^1.2.2",
          "@types/jquery": "^2.0.48",
          "@types/lodash": "^4.14.73",
          "angular2-moment": "^1.7.0",
          "bootstrap": "^3.3.7",
          "core-js": "^2.5.0",
          "jquery": "^3.2.1",
          "lodash": "^4.17.4",
          "particles.js": "^2.0.0",
          "rxjs": "^5.5.2",
          "zone.js": "^0.8.16"
      },
      "devDependencies": {
          "@angular/cli": "1.0.0",
          "@angular/compiler-cli": "5.0.0",
          "@types/jasmine": "2.5.38",
          "@types/node": "^6.0.87",
          "codelyzer": "~2.0.0",
          "jasmine-core": "~2.5.2",
          "jasmine-spec-reporter": "~3.2.0",
          "karma": "~1.4.1",
          "karma-chrome-launcher": "~2.0.0",
          "karma-cli": "~1.0.1",
          "karma-coverage-istanbul-reporter": "^0.2.0",
          "karma-jasmine": "~1.1.0",
          "karma-jasmine-html-reporter": "^0.2.2",
          "protractor": "~5.1.0",
          "ts-node": "~2.0.0",
          "tslint": "~4.5.0",
          "typescript": "~2.4.2"
      }
  }
  </code></pre>