diff --git a/CHANGELOG.md b/CHANGELOG.md
index e671655..59739ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 4.0.0 (unreleased)
+## 4.0.0
 
 - Drop support for Python 2.7, 3.5 and 3.6
 - Add support for Python 3.10
diff --git a/django_migration_linter/constants.py b/django_migration_linter/constants.py
index e1ca53a..23a6af0 100644
--- a/django_migration_linter/constants.py
+++ b/django_migration_linter/constants.py
@@ -1,6 +1,6 @@
 from appdirs import user_cache_dir
 
-__version__ = "3.0.1"
+__version__ = "4.0.0"
 
 DEFAULT_CACHE_PATH = user_cache_dir("django-migration-linter", version=__version__)