diff --git a/Scrapy-release-procedure.md b/Scrapy-release-procedure.md
index 5e4a07d..dc19818 100644
--- a/Scrapy-release-procedure.md
+++ b/Scrapy-release-procedure.md
@@ -149,6 +149,6 @@ As a different team produces images for [Scrapy Cloud stacks](https://github.com
 
 ## Upgrade CI packages
 
-To avoid the risk of CI suddenly failing and confusing pull request authors, we freeze some CI packages in `tox.ini` and `tests/requirements.txt`.
+To avoid the risk of CI suddenly failing and confusing pull request authors, we freeze some CI packages in `tox.ini`, `tests/requirements.txt`, and `.pre-commit-config.yaml`. You can find them looking for `==`, but mind that some freezes are to be kept (e.g. to test minimum versions of Scrapy dependencies).
 
 Right after a major or minor release would be a good time to update those packages, solving or allow-listing any issue raised by their new versions.
\ No newline at end of file