diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79e834b..d4ac0a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,25 @@
 
 ## [Unreleased]
 
+## [6.0.0] - 2018-12-25
+
+### Changed
+
+-   Prefer `const` over `var` in README ([**@ralphtheninja**](https://github.com/ralphtheninja))
+-   Upgrade `abstract-leveldown` dependency from `^5.0.0` to `^v6.0.0` ([#68](https://github.com/level/encoding-down/issues/68)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+-   Upgrade `standard` devDependency from `^11.0.0` to `^v12.0.0` ([**@ralphtheninja**](https://github.com/ralphtheninja))
+-   Use full link references in README ([#60](https://github.com/level/encoding-down/issues/60)) ([**@vweevers**](https://github.com/vweevers))
+
+### Added
+
+-   Explain serialization ([#72](https://github.com/level/encoding-down/issues/72)) ([**@vweevers**](https://github.com/vweevers))
+-   Add `nyc` and `coveralls` ([#64](https://github.com/level/encoding-down/issues/64)) ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
+### Removed
+
+-   Remove node 9 ([**@ralphtheninja**](https://github.com/ralphtheninja))
+-   Remove now superfluous `_setupIteratorOptions()` ([**@ralphtheninja**](https://github.com/ralphtheninja))
+
 ## [5.0.4] - 2018-06-22
 
 ### Added
@@ -251,7 +270,9 @@
 
 :seedling: Initial release.
 
-[unreleased]: https://github.com/level/encoding-down/compare/v5.0.4...HEAD
+[unreleased]: https://github.com/level/encoding-down/compare/v6.0.0...HEAD
+
+[6.0.0]: https://github.com/level/encoding-down/compare/v5.0.4...v6.0.0
 
 [5.0.4]: https://github.com/level/encoding-down/compare/v5.0.3...v5.0.4
 
diff --git a/UPGRADING.md b/UPGRADING.md
index 9359525..0d952d5 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -2,6 +2,10 @@
 
 This document describes breaking changes and how to upgrade. For a complete list of changes including minor and patch releases, please refer to the [changelog](CHANGELOG.md).
 
+## v6
+
+ Upgraded `abstract-leveldown` to `v6.0.0`. Please see the corresponding [changelog entry](https://github.com/Level/abstract-leveldown/blob/master/CHANGELOG.md#600---2018-10-20) for more information.
+
 ## v5
 
 Dropped support for node 4. No other breaking changes.