From 2a15b1a98638dd7a21e87d875f7e9569a5a46940 Mon Sep 17 00:00:00 2001
From: Roman Mogylatov <rmogilatov@gmail.com>
Date: Tue, 23 Mar 2021 21:09:29 -0400
Subject: [PATCH] Update changelog

---
 docs/main/changelog.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index 53594aa7..fa813167 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`_
 
+Development version
+-------------------
+- Fix ``ThreadSafeSingleton`` synchronization issue.
+  See issue: `#433 <https://github.com/ets-labs/python-dependency-injector/issues/433>`_.
+  Thanks to `@garlandhu <https://github.com/garlandhu>`_ for reporting the issue.
+
 4.31.0
 ------
 - Implement providers' lazy initialization.