diff --git a/CHANGELOG.md b/CHANGELOG.md
index 93701f61..202e1ba2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com), and this
 
 ### Changed
 * [#1339](https://github.com/shlinkio/shlink/issues/1339) Added new test suite for CLI E2E tests.
+* [#1503](https://github.com/shlinkio/shlink/issues/1503) Drastically improved build time in GitHub Actions, by optimizing parallelization, adding php extensions cache and running mutation tests only for changed files.
 
 ### Deprecated
 * *Nothing*