diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fc7b887..e2580b2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -65,6 +65,32 @@ We require that your commit messages match our template. The easiest way to do t
 SwiftMetrics uses XCTest to run tests on both macOS and Linux. While the macOS version of XCTest is able to use the Objective-C runtime to discover tests at execution time, the Linux version is not.
 For this reason, whenever you add new tests **you have to run a script** that generates the hooks needed to run those tests on Linux, or our CI will complain that the tests are not all present on Linux. To do this, merely execute `ruby ./scripts/generate_linux_tests.rb` at the root of the package and check the changes it made.
 
+### Run `./scripts/sanity.sh`
+
+  The scripts directory contains a [sanity.sh script](https://github.com/swift-server/swift-service-lifecycle/blob/master/scripts/sanity.sh) 
+ that enforces additional checks, like license headers and formatting style.
+ Please make sure to `./scripts/sanity.sh` before pushing a change upstream, otherwise it is likely the PR validation will fail
+ on minor changes such as a missing `self.` or similar formatting issues.
+
+  > The script also executes the above mentioned `generate_linux_tests.rb`.
+
+ For frequent contributors, we recommend adding the script as a [git pre-push hook](https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks), which you can do via executing the following command
+ in the project root directory: 
+
+  ```bash
+ cat << EOF > .git/hooks/pre-push
+ #!/bin/bash
+
+ if [[ -f "scripts/sanity.sh" ]]; then
+   scripts/sanity.sh
+ fi
+ EOF
+ ```
+ Which makes the script execute, and only allow the `git push` to complete if the check has passed.
+
+  In the case of formatting issues, you can then `git add` the formatting changes, and attempt the push again. 
+
+
 ## How to contribute your work
 
 Please open a pull request at https://github.com/apple/swift-metrics. Make sure the CI passes, and then wait for code review.