diff --git a/CONTRIBUTING.mdown b/CONTRIBUTING.mdown
index 0777a171a..fcb2d5ea8 100644
--- a/CONTRIBUTING.mdown
+++ b/CONTRIBUTING.mdown
@@ -1,5 +1,7 @@
 Facebook welcomes contributions to our SDKs.
 
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.facebook.com/codeofconduct) so that you can understand what actions will and will not be tolerated.
+
 All contributors must sign a CLA (contributor license agreement) here:
 
   https://code.facebook.com/cla/