diff --git a/CHANGELOG.md b/CHANGELOG.md
index f61f995a..a6015805 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+## v5.5.1 - 2024-05-24
+
 - [#345](https://github.com/Shopify/shopify-api-php/pull/345) [Patch] Stop storing a session in the database when beginning OAuth, only when completing it
 
 ## v5.5.0 - 2024-04-18
diff --git a/src/version.php b/src/version.php
index 8ec7486d..9a8fb3c2 100644
--- a/src/version.php
+++ b/src/version.php
@@ -1,5 +1,5 @@
 <?php
 
 // @codeCoverageIgnoreStart
-return '5.5.0';
+return '5.5.1';
 // @codeCoverageIgnoreEnd