diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index a56c23cb..1f18e699 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -7,8 +7,8 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
-Development version
--------------------
+3.21.0
+------
 - Re-design ``Flask`` integration.
 - Make cosmetic fixes for ``Selector`` provider docs.
 
diff --git a/src/dependency_injector/__init__.py b/src/dependency_injector/__init__.py
index 95ea235b..39ad1bf0 100644
--- a/src/dependency_injector/__init__.py
+++ b/src/dependency_injector/__init__.py
@@ -1,6 +1,6 @@
 """Dependency injector top-level package."""
 
-__version__ = '3.20.1'
+__version__ = '3.21.0'
 """Version number that follows semantic versioning.
 
 :type: str