diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index 29c2d2d9..83d77953 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -11,6 +11,10 @@ Development version
 -------------------
 - No features.
 
+3.3.1
+-----
+- Add some improvements to the documentation.
+
 3.3.0
 -----
 - Add support of Python 3.6.
diff --git a/src/dependency_injector/__init__.py b/src/dependency_injector/__init__.py
index dba4eac9..c4643928 100644
--- a/src/dependency_injector/__init__.py
+++ b/src/dependency_injector/__init__.py
@@ -1,6 +1,6 @@
 """Dependency injector top-level package."""
 
-__version__ = '3.3.0'
+__version__ = '3.3.1'
 """Version number that follows semantic versioning.
 
 :type: str