diff --git a/django_mongodb_backend/__init__.py b/django_mongodb_backend/__init__.py
index bca3b4ab2..15f4880ec 100644
--- a/django_mongodb_backend/__init__.py
+++ b/django_mongodb_backend/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "5.2.1.dev0"
+__version__ = "5.2.1"
 
 # Check Django compatibility before other imports which may fail if the
 # wrong version of Django is installed.
diff --git a/docs/releases/5.2.x.rst b/docs/releases/5.2.x.rst
index 8079ac439..c7ef3b324 100644
--- a/docs/releases/5.2.x.rst
+++ b/docs/releases/5.2.x.rst
@@ -5,7 +5,7 @@ Django MongoDB Backend 5.2.x
 5.2.1
 =====
 
-*Unreleased*
+*September 8, 2025*
 
 New features
 ------------