diff --git a/dependency_injector/__init__.py b/dependency_injector/__init__.py
index baa74f2a..063c3f83 100644
--- a/dependency_injector/__init__.py
+++ b/dependency_injector/__init__.py
@@ -51,7 +51,7 @@ from .errors import UndefinedProviderError
 from . import catalogs
 catalog = catalogs
 
-VERSION = '1.14.2'
+VERSION = '1.14.3'
 """Version number that follows semantic versioning.
 
 :type: str
diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index f03b3446..45575063 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -11,6 +11,13 @@ Development version
 -------------------
 - No features.
 
+1.14.3
+------
+- Optimize internals of providers.
+- Optimize ``Callable`` provider.
+- Optimize ``Factory`` provider.
+- Optimize ``Singleton`` provider.
+
 1.14.2
 ------
 - Update documentation and description.