diff --git a/Developer's-Guide.md b/Developer's-Guide.md
index 9f71c61..87cbf8f 100644
--- a/Developer's-Guide.md
+++ b/Developer's-Guide.md
@@ -109,6 +109,8 @@ The type checker is **not** run as part of pre-commit, since that makes it harde
 
 Please make a new branch from either develop or master, and make your pull requests to khopa/develop.
 
+New features and bug fixes in pull requests are usually worth mentioning in the changelog. Exceptions are fixes for bugs that never shipped (were only present in a canary build), and changes with no intended user observable behavior, such as a refactor. If you're comfortable writing the note yourself, add it to `changelog.md` in the root of the project in the section for the upcoming release.
+
 If you're new to GitHub, https://guides.github.com/introduction/flow/ and the other tutorials on that site may be helpful.