diff --git a/CHANGELOG.md b/CHANGELOG.md
index e84ba26..ae2e4a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,54 +4,81 @@ All notable changes to this project will be documented in this file.
 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]()
+## [Unreleased](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.6...master)
 
-## [0.4.6](https://github.com/adrianshort/uk_planning_scraper/tree/f9e70cb21c60a732f6ec5f72e55e4887e7455405) - 2020-04-22
+This functionality is on GitHub but not yet in the gem.
+
+### Added
+
+- Case officer search for Northgate
+- Status search for Idox and Northgate
+
+## [0.4.6](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.5...v0.4.6) - 2020-04-22
 
 ### Fixed
 
 - Major change to Northgate output semantics. Scraper previously returned `date_received` from the search results pages. Now it returns `date_validated` which is correct. Previously collected data needs to be moved to this new column or rescraped. [#40](https://github.com/adrianshort/uk_planning_scraper/issues/40)
 - Upgraded `rake` to fix [CVE-2020-8130](http://cve.circl.lu/cve/CVE-2020-8130).
 
-## [0.4.5](https://github.com/adrianshort/uk_planning_scraper/tree/624efc0ecf0aaccbd3a90df887beefce1f386e5d) - 2020-02-24
+## [0.4.5](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.4...v0.4.5) - 2020-02-24
 
 ### Added
 
 - Gateshead Council.
 
-## [0.4.4](https://github.com/adrianshort/uk_planning_scraper/tree/557678ea7c9efa67bccd3f972b23aff588368ab8) - 2019-10-29
+## [0.4.4](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.3...v0.4.4) - 2019-10-29
 
-### Changed
+### Fixed
 
 - URLs for Camden, Islington and Merton councils.
 
-## [0.4.3](https://github.com/adrianshort/uk_planning_scraper/tree/45427b73ffb36400ee3c5aa7dd52bccd42caa4a0) - 2019-01-22
+## [0.4.3](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.2...v0.4.3) - 2019-01-22
+
+### Changed
+
+- `uk_planning_scraper` [published as a gem on RubyGems](https://rubygems.org/gems/uk_planning_scraper/versions/0.4.5) for the first time.
+
+## [0.4.2](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.1...v0.4.2) - 2019-01-08
 
 ### Changed
 
 - Kingston becomes Idox.
 
-## [0.4.2](https://github.com/adrianshort/uk_planning_scraper/tree/dcd996772be2939c4fc153c207a18267d64566eb) - 2019-01-08
+### Fixed
+- Bradford and Leeds tagged `westyorkshire` not `westmidlands`.
+
+## [0.4.1](https://github.com/adrianshort/uk_planning_scraper/compare/v0.4.0...v0.4.1) - 2018-10-18
+
+### Added
+
+- 39 new councils.
 
-## [0.4.1](https://github.com/adrianshort/uk_planning_scraper/tree/b8a303381ea7bab1ea6a5cb371f57b52b8f21950) - 2018-10-18
+### Changed
+
+- Use spaces not commas to separate tags in `authorities.csv` file.
+- Use `pry` not `irb` as default console.
+
+## [0.4.0](https://github.com/adrianshort/uk_planning_scraper/compare/v0.3.2...v0.4.0) - 2018-10-12
+
+### Changed
 
-## [0.4.0](https://github.com/adrianshort/uk_planning_scraper/tree/09b289d1fec89346f3182d2e6eedb3f4295b76e3) - 2018-10-12
+- Use chained methods rather than an options hash for the scraper parameters. This permits better error checking. [#15](https://github.com/adrianshort/uk_planning_scraper/issues/15)
 
-## [0.3.2](https://github.com/adrianshort/uk_planning_scraper/tree/9cfbdd4a1819b20bb2a078d97dea74925a95f933) - 2018-10-10
+## [0.3.2](https://github.com/adrianshort/uk_planning_scraper/compare/v0.3.1...v0.3.2) - 2018-10-10
 
-## [0.3.1](https://github.com/adrianshort/uk_planning_scraper/tree/dd8e0849e2b96303891b9023692cae0feaa2e153) - 2018-10-10
+## [0.3.1](https://github.com/adrianshort/uk_planning_scraper/compare/v0.3.0...v0.3.1) - 2018-10-10
 
-## [0.3.0](https://github.com/adrianshort/uk_planning_scraper/tree/45427b73ffb36400ee3c5aa7dd52bccd42caa4a0) - 2019-10-09
+## [0.3.0](https://github.com/adrianshort/uk_planning_scraper/compare/v0.2.0...v0.3.0) - 2019-10-09
 
-## [0.2.0](https://github.com/adrianshort/uk_planning_scraper/tree/b9e75b3507523d64c0a14168dbd38d967d6c4781) - 2018-09-19 
+## [0.2.0](https://github.com/adrianshort/uk_planning_scraper/compare/v0.1.1...v0.2.0) - 2018-09-19 
 
-## [0.1.1](https://github.com/adrianshort/uk_planning_scraper/tree/b9e75b3507523d64c0a14168dbd38d967d6c4781) - 2018-09-15
+## [0.1.1](https://github.com/adrianshort/uk_planning_scraper/compare/v0.1.0...v0.1.1) - 2018-09-15
 
 ### Fixed
 
 -  [#3](https://github.com/adrianshort/uk_planning_scraper/issues/3)
 
-## [0.1.0](https://github.com/adrianshort/uk_planning_scraper/tree/7f48783e71195a884ae6c2ea80f28decaa2d9530) - 2018-09-14
+## [0.1.0](https://github.com/adrianshort/uk_planning_scraper/releases/tag/v0.1.0) - 2018-09-14
 
 ### Added