diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index 25211f90..1827833c 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -7,6 +7,10 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
+4.0.0
+-----
+- Add wiring.
+
 3.44.0
 ------
 - Add native support of the generics to the providers: ``some_provider = providers.Provider[SomeClass]``.
diff --git a/src/dependency_injector/__init__.py b/src/dependency_injector/__init__.py
index 5a76afaa..71177d5c 100644
--- a/src/dependency_injector/__init__.py
+++ b/src/dependency_injector/__init__.py
@@ -1,6 +1,6 @@
 """Top-level package."""
 
-__version__ = '3.44.0'
+__version__ = '4.0.0a1'
 """Version number.
 
 :type: str