Version fixed.

src/Squidex/package.json

@@ -76,13 +76,13 @@
     "karma-mocha-reporter": "2.2.5",
     "karma-sourcemap-loader": "0.3.7",
     "karma-webpack": "3.0.0",
-    "mini-css-extract-plugin": "^0.4.0",
+    "mini-css-extract-plugin": "0.4.0",
     "node-sass": "4.9.0",
     "noop-loader": "1.0.0",
     "null-loader": "0.1.1",
     "raw-loader": "0.5.1",
     "rimraf": "2.6.2",
-    "rxjs-tslint": "^0.1.4",
+    "rxjs-tslint": "0.1.4",
     "sass-lint": "1.12.1",
     "sass-loader": "7.0.1",
     "style-loader": "0.21.0",
@@ -93,7 +93,7 @@
     "typescript": "2.7.2",
     "underscore": "1.9.1",
     "webpack": "4.10.2",
-    "webpack-cli": "^2.1.5",
+    "webpack-cli": "2.1.5",
     "webpack-dev-server": "3.1.4",
     "webpack-merge": "4.1.2"
   }