diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4ae487..093952d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
+## [0.5.5] - 2025-01-17
+
+### Added
+
+- Introduced the `locking` and `full_locking` features to make the serialization of FAPI calls optional.
+
 ## [0.5.4] - 2025-01-17
 
 ### Added
diff --git a/src/locking.rs b/src/locking.rs
index cf5f798..5370c52 100644
--- a/src/locking.rs
+++ b/src/locking.rs
@@ -41,7 +41,7 @@ mod lock_impl {
     use std::sync::RwLock;
 
     pub enum LockGuard {
-        None
+        None,
     }
 
     impl LockGuard {