diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 5871bff..591b7ca 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,3 +1,13 @@
+v5.5.2 (2025-02-20)
+===================
+
+- Reduce number of ``@cached`` lock/unlock operations.
+
+- Improve documentation.
+
+- Update CI environment.
+
+
 v5.5.1 (2025-01-21)
 ===================
 
diff --git a/src/cachetools/__init__.py b/src/cachetools/__init__.py
index 3253ff1..d3051c1 100644
--- a/src/cachetools/__init__.py
+++ b/src/cachetools/__init__.py
@@ -13,7 +13,7 @@
     "cachedmethod",
 )
 
-__version__ = "5.5.1"
+__version__ = "5.5.2"
 
 import collections
 import collections.abc