diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c7a22067b59..c3ad2221fda 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -78,6 +78,18 @@ For more detail, see the [pull request submission guide](docs/en_US/submitting_p
 
 Contributors are responsible for understanding, testing, and standing behind everything they submit, whether or not AI tools were used. Please do not open large numbers of auto-generated issues or pull requests without first discussing that work with the maintainers.
 
+- If you used AI tools in preparing your PR, please commit with the `Co-Authored-By`, `Generated-by`, or similar commit trailer.
+  ```text
+  Co-Authored-By: <AI tool name and version>
+  Generated-by: <AI tool name and version>
+  ```
+  Example:
+  ```text
+  #1234: Fix issue in web interface
+
+  Co-Authored-By: Claude Sonnet 4.6 <claude@anthropic.com>
+  ```
+
 ## Development Setup
 
 In the following documentation and examples, `$PGADMIN4_SRC` is used to denote the top-level directory of your copy of the pgAdmin source tree (either from a tarball or a git checkout).