diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8dbd456d35e8d..36ec53c6a181d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -54,6 +54,8 @@ A useful bug report filed as a GitHub issue provides information about how to re
 
 * Review discussions on the [Julia Discourse forum](https://discourse.julialang.org).
 
+* If your pull request contains substantial contributions from a generative AI tool, please disclose so with details, and review all changes before opening.
+
 * Relax and have fun!
 
 ### Guidance for specific changes