diff --git a/engine/src/flutter/CONTRIBUTING.md b/engine/src/flutter/CONTRIBUTING.md
index 08b4310864..79a18647d3 100644
--- a/engine/src/flutter/CONTRIBUTING.md
+++ b/engine/src/flutter/CONTRIBUTING.md
@@ -106,9 +106,11 @@ To start working on a patch:
 
  * `git fetch upstream`
  * `git checkout upstream/master -b name_of_your_branch`
- * Hack away. Please peruse our [style guides](sky/specs/style-guide.md) and [design
-   principles](sky/specs/design.md) before working on anything non-trivial. These
-   guidelines are intended to keep the code consistent and avoid common pitfalls.
+ * Hack away. Please peruse our
+   [style guides](https://flutter.io/style-guide/) and
+   [design principles](https://flutter.io/design-principles/) before
+   working on anything non-trivial. These guidelines are intended to
+   keep the code consistent and avoid common pitfalls.
  * `git commit -a -m "<your brief but informative commit message>"`
  * `git push origin name_of_your_branch`