diff --git a/ponyracer/package.json b/ponyracer/package.json
index 7e169b795..8838646e3 100644
--- a/ponyracer/package.json
+++ b/ponyracer/package.json
@@ -26,22 +26,22 @@
     "zone.js": "^0.8.19"
   },
   "devDependencies": {
-    "@angular/cli": "~6.0.0-beta.2",
+    "@angular/cli": "~6.0.0-beta.3",
     "@angular/compiler-cli": "^5.2.0",
     "@angular/language-service": "^5.2.0",
-    "@types/jasmine": "~2.8.3",
-    "@types/jasminewd2": "~2.0.2",
-    "@types/node": "~6.0.60",
-    "codelyzer": "^4.0.1",
-    "jasmine-core": "~2.8.0",
+    "@types/jasmine": "~2.8.6",
+    "@types/jasminewd2": "~2.0.3",
+    "@types/node": "~8.9.4",
+    "codelyzer": "~4.1.0",
+    "jasmine-core": "~2.99.1",
     "jasmine-spec-reporter": "~4.2.1",
     "karma": "~2.0.0",
     "karma-chrome-launcher": "~2.2.0",
-    "karma-coverage-istanbul-reporter": "^1.2.1",
-    "karma-jasmine": "~1.1.0",
+    "karma-coverage-istanbul-reporter": "~1.4.1",
+    "karma-jasmine": "~1.1.1",
     "karma-jasmine-html-reporter": "^0.2.2",
-    "protractor": "~5.1.2",
-    "ts-node": "~4.1.0",
+    "protractor": "~5.3.0",
+    "ts-node": "~5.0.0",
     "tslint": "~5.9.1",
     "typescript": "~2.5.3"
   }
diff --git a/ponyracer/src/environments/environment.ts b/ponyracer/src/environments/environment.ts
index b7f639aec..4b5d1b15e 100644
--- a/ponyracer/src/environments/environment.ts
+++ b/ponyracer/src/environments/environment.ts
@@ -6,3 +6,11 @@
 export const environment = {
   production: false
 };
+
+/*
+ * In development mode, to ignore zone related error stack frames such as
+ * `zone.run`, `zoneDelegate.invokeTask` for easier debugging, you can
+ * import the following file, but please comment it out in production mode
+ * because it will have performance impact when throw error
+ */
+// import 'zone.js/dist/zone-error';  // Included with Angular CLI.