update: npm

package.json

@@ -88,8 +88,8 @@
     "postcss-url": "^7.2.1",
     "prettier": "^1.16.4",
     "rimraf": "^2.6.0",
-    "sass": "^1.26.11",
-    "sass-loader": "^7.3.1",
+    "sass": "1.26.11",
+    "sass-loader": "7.3.1",
     "semver": "^5.3.0",
     "shelljs": "^0.7.6",
     "uglifyjs-webpack-plugin": "^1.1.1",