diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index 1eb054a..6a950fb 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -86,6 +86,7 @@ jobs:
           - "7.3"
           - "7.4"
           - "8.0"
+          - "8.1"
 
         dependencies:
           - "locked"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 437f679..093c253 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 For a full diff see [`0.3.1...master`][0.3.1...master].
 
+### Added
+
+- Added support for PHP 8.1 ([#105]), by [@localheinz]
+
 ### Changed
 
 - Dropped support for PHP 7.1 ([#106]), by [@localheinz]
@@ -168,6 +172,7 @@ For a full diff see [`fcfd14e...v0.1.1`][fcfd14e...0.1.1].
 [#58]: https://github.com/nicmart/Tree/pull/58
 [#59]: https://github.com/nicmart/Tree/pull/59
 [#79]: https://github.com/nicmart/Tree/pull/79
+[#105]: https://github.com/nicmart/Tree/pull/105
 [#106]: https://github.com/nicmart/Tree/pull/106
 
 [@asalazar-pley]: https://github.com/asalazar-pley