diff --git a/packages/@vue/cli-service/__tests__/Service.spec.js b/packages/@vue/cli-service/__tests__/Service.spec.js
index 321637a7a..7f8c77e6f 100644
--- a/packages/@vue/cli-service/__tests__/Service.spec.js
+++ b/packages/@vue/cli-service/__tests__/Service.spec.js
@@ -64,7 +64,7 @@ test('loading plugins from package.json', () => {
   mockPkg({
     devDependencies: {
       'bar': '^1.0.0',
-      '@vue/cli-plugin-babel': '^4.0.0',
+      '@vue/cli-plugin-babel': '^4.0.0-alpha.0',
       'vue-cli-plugin-foo': '^1.0.0'
     }
   })
diff --git a/scripts/syncDeps.js b/scripts/syncDeps.js
index 4d21ae372..67a9e54a0 100644
--- a/scripts/syncDeps.js
+++ b/scripts/syncDeps.js
@@ -173,7 +173,7 @@ async function syncDeps ({ local, version, skipPrompt }) {
               return require(`../packages/${pkg}/package.json`).version
             }
 
-            if (pkg.includes('@vue/cli-plugin')) {
+            if (!semver.prerelease(version) && pkg.includes('@vue/cli-plugin')) {
               return `${semver.major(version)}.${semver.minor(version)}.0`
             }