diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 59a0c990cf..63d1086970 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -31,6 +31,7 @@ Participation in this project comes under the [Contributor Covenant Code of Cond
   for review to happen early, and ensures no wasted effort occurs.
 - For new features, documentation *must* be included. Review the [Documentation Editing and Contribution](https://agones.dev/site/docs/contribute/)
   guide for details.
+- It is strongly recommended that new API design follows the [Google AIPs](https://google.aip.dev/) design guidelines.  
 - All submissions, including submissions by project members, will require review before being merged.
 - Once review has occurred, please rebase your PR down to a single commit. This will ensure a nice clean Git history.
 - If you are unable to access build errors from your PR, make sure that you have joined the [agones-discuss mailing list](https://groups.google.com/forum/#!forum/agones-discuss).