diff --git a/CHANGELOG.md b/CHANGELOG.md
index f31a4a61..b4cfe12f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Deprecated
 
+- Deprecate `Document::createShorthands()` (#567)
+
 ### Removed
 
 - Drop support for PHP < 7.2 (#420)
diff --git a/src/CSSList/Document.php b/src/CSSList/Document.php
index bad99831..d4f2479a 100644
--- a/src/CSSList/Document.php
+++ b/src/CSSList/Document.php
@@ -140,6 +140,8 @@ public function expandShorthands()
      * Create shorthands properties whenever possible.
      *
      * @return void
+     *
+     * @deprecated This will be removed without substitution in version 10.0.
      */
     public function createShorthands()
     {