diff --git a/CHANGELOG.md b/CHANGELOG.md
index dde06cd..5ee9ff4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
-- No changes yet.
+### Changed
+- Drop library dependency on `golang.org/x/{lint, tools}`.
 
 ## [1.5.1] - 2019-11-19
 - Fix bug where `Bool.CAS` and `Bool.Toggle` do work correctly together
diff --git a/tools.go b/tools_test.go
similarity index 100%
rename from tools.go
rename to tools_test.go