diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index b14c2ba6..39030ab2 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -18,7 +18,7 @@ Whenever there is a need to break compatibility, it is announced here in the cha
 
 .. changelog
 
-21.5.0 (UNRELEASED)
+21.5.0 (2021-12-16)
 -------------------
 
 
diff --git a/src/structlog/__init__.py b/src/structlog/__init__.py
index 63103b3f..48d3387e 100644
--- a/src/structlog/__init__.py
+++ b/src/structlog/__init__.py
@@ -42,7 +42,7 @@
     contextvars = None  # type: ignore
 
 
-__version__ = "21.5.0.dev0"
+__version__ = "21.5.0"
 
 __title__ = "structlog"
 # __doc__ is None when running with PYTHONOPTIMIZE=2 / -OO