diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index 735f3f67..d793dac2 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -7,6 +7,12 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
+4.3.7
+-----
+- Fix race in ``ThreadSafeSingleton``. Many thanks to
+  `Dmitry Rassoshenko aka rda-dev <https://github.com/rda-dev>`_ for the pull request
+  (See PR `#322 <https://github.com/ets-labs/python-dependency-injector/pull/322>`_).
+
 4.3.6
 -----
 - Fix changelog typo.
diff --git a/src/dependency_injector/__init__.py b/src/dependency_injector/__init__.py
index 5e5da8b0..004d3690 100644
--- a/src/dependency_injector/__init__.py
+++ b/src/dependency_injector/__init__.py
@@ -1,6 +1,6 @@
 """Top-level package."""
 
-__version__ = '4.3.6'
+__version__ = '4.3.7'
 """Version number.
 
 :type: str