diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75973d5a3..1823891d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - REPL reporting a runtime error on `0^0` (#492)
 - Improved how documentation is produced for VSCode compatibility (#485)
 - Enable access to builtin documentation parsed from `builtin.qnt` (#485)
+- The effect and mode checkers no longer complain about runs (#505)
 
 ### Added