diff --git a/CHANGELOG.md b/CHANGELOG.md
index a0c0f7b..3a3e282 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,12 @@
-## [*Unreleased*](https://github.com/thoughtbot/yesod-auth-oauth2/compare/v0.4.0.1...master)
+## [*Unreleased*](https://github.com/thoughtbot/yesod-auth-oauth2/compare/v0.5.0.0...master)
 
 None
 
+## [v0.5.0.0](https://github.com/thoughtbot/yesod-auth-oauth2/compare/v0.4.1.0...v0.5.0.0)
+
+- COMPATIBILITY: Allow and require yesod-1.6
+- COMPATIBILITY: Stop testing GHC 8.0 on CI
+
 ## [v0.4.1.0](https://github.com/thoughtbot/yesod-auth-oauth2/compare/v0.4.0.1...v0.4.1.0)
 
 - Check for `error`s in callback query params, as described in the
diff --git a/package.yaml b/package.yaml
index a633a8b..0457a41 100644
--- a/package.yaml
+++ b/package.yaml
@@ -1,6 +1,6 @@
 ---
 name: yesod-auth-oauth2
-version: '0.4.1.0'  # N.B. PVP-compliant Semver: 0.MAJOR.MINOR.PATCH
+version: '0.5.0.0'  # N.B. PVP-compliant Semver: 0.MAJOR.MINOR.PATCH
 synopsis: OAuth 2.0 authentication plugins
 description: Library to authenticate with OAuth 2.0 for Yesod web applications.
 category: Web