diff --git a/package.json b/package.json
index 448d1ec3..f82df424 100644
--- a/package.json
+++ b/package.json
@@ -75,11 +75,11 @@
     "@babel/core": "7.0.0",
     "@babel/register": "7.0.0",
     "@vue/cli-plugin-babel": "3.5.3",
-    "@vue/cli-plugin-eslint": "^3.9.1",
+    "@vue/cli-plugin-eslint": "3.9.1",
     "@vue/cli-plugin-unit-jest": "3.5.3",
     "@vue/cli-service": "3.5.3",
     "@vue/test-utils": "1.0.0-beta.29",
-    "autoprefixer": "^9.5.1",
+    "autoprefixer": "9.5.1",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "10.0.1",
     "babel-jest": "23.6.0",
@@ -92,15 +92,16 @@
     "husky": "1.3.1",
     "lint-staged": "8.1.5",
     "mockjs": "1.0.1-beta3",
-    "node-sass": "^4.9.0",
+    "node-sass": "4.14.1",
     "plop": "2.3.0",
-    "runjs": "^4.3.2",
-    "sass-loader": "^7.1.0",
+    "runjs": "4.3.2",
+    "sass-loader": "7.3.1",
     "script-ext-html-webpack-plugin": "2.1.3",
-    "serve-static": "^1.13.2",
+    "serve-static": "1.13.2",
     "svg-sprite-loader": "4.1.3",
     "svgo": "1.2.0",
-    "vue-template-compiler": "2.6.10"
+    "vue-template-compiler": "2.6.10",
+    "core-js": "2.6.10"
   },
   "engines": {
     "node": ">=8.9",