diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md
index b11c069..a0b3a0e 100644
--- a/docs/CONTRIBUTING.md
+++ b/docs/CONTRIBUTING.md
@@ -26,6 +26,7 @@ When contributing to this repository, please [submit a new issue](https://github
 1. Commit your code changes to this feature branch.
 1. Push the changes to your fork.
 1. Submit a new pull request, using `dev` as the base branch.
+  - If your code changes or extends the WireViz YAML syntax, be sure to update the [syntax description document](https://github.com/formatc1702/WireViz/blob/dev/docs/syntax.md) in your PR.
 1. Please include in the PR description (and optionally also in the commit message body) a reference (# followed by issue number) to the issue where the suggested changes are discussed.
 
 ### Hints