diff --git a/ponyracer/package.json b/ponyracer/package.json
index 985910b69..596cb4437 100644
--- a/ponyracer/package.json
+++ b/ponyracer/package.json
@@ -11,23 +11,23 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "~9.0.0",
-    "@angular/common": "~9.0.0",
-    "@angular/compiler": "~9.0.0",
-    "@angular/core": "~9.0.0",
-    "@angular/forms": "~9.0.0",
-    "@angular/platform-browser": "~9.0.0",
-    "@angular/platform-browser-dynamic": "~9.0.0",
-    "@angular/router": "~9.0.0",
+    "@angular/animations": "~9.0.1",
+    "@angular/common": "~9.0.1",
+    "@angular/compiler": "~9.0.1",
+    "@angular/core": "~9.0.1",
+    "@angular/forms": "~9.0.1",
+    "@angular/platform-browser": "~9.0.1",
+    "@angular/platform-browser-dynamic": "~9.0.1",
+    "@angular/router": "~9.0.1",
     "rxjs": "~6.5.4",
     "tslib": "^1.10.0",
     "zone.js": "~0.10.2"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "~0.900.1",
-    "@angular/cli": "~9.0.1",
-    "@angular/compiler-cli": "~9.0.0",
-    "@angular/language-service": "~9.0.0",
+    "@angular-devkit/build-angular": "~0.900.2",
+    "@angular/cli": "~9.0.2",
+    "@angular/compiler-cli": "~9.0.1",
+    "@angular/language-service": "~9.0.1",
     "@types/node": "^12.11.1",
     "@types/jasmine": "~3.5.0",
     "@types/jasminewd2": "~2.0.3",
diff --git a/ponyracer/src/polyfills.ts b/ponyracer/src/polyfills.ts
index aa665d6b8..03711e5d9 100644
--- a/ponyracer/src/polyfills.ts
+++ b/ponyracer/src/polyfills.ts
@@ -35,7 +35,7 @@
  * will put import in the top of bundle, so user need to create a separate file
  * in this directory (for example: zone-flags.ts), and put the following flags
  * into that file, and then add the following code before importing zone.js.
- * import './zone-flags.ts';
+ * import './zone-flags';
  *
  * The flags allowed in zone-flags.ts are listed here.
  *