diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcb1c97..e34331c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,5 @@
-v0.4.0 (in development)
------------------------
+v0.4.0 (2022-06-17)
+-------------------
 - Passing a regular expression separator to a `read_*()` function is now
   deprecated, and support will be removed in version 1.0.
 - Added `TerminatedSplitter`, `PrecededSplitter`, `SeparatedSplitter`, &
diff --git a/docs/changelog.rst b/docs/changelog.rst
index bc3fade..014aa6f 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -3,8 +3,8 @@
 Changelog
 =========
 
-v0.4.0 (in development)
------------------------
+v0.4.0 (2022-06-17)
+-------------------
 - Passing a regular expression separator to a ``read_*()`` function is now
   deprecated, and support will be removed in version 1.0.
 - Added `TerminatedSplitter`, `PrecededSplitter`, `SeparatedSplitter`, &
diff --git a/src/linesep/__init__.py b/src/linesep/__init__.py
index a893fb1..5cc2a7d 100644
--- a/src/linesep/__init__.py
+++ b/src/linesep/__init__.py
@@ -9,7 +9,7 @@
 more information.
 """
 
-__version__ = "0.4.0.dev1"
+__version__ = "0.4.0"
 __author__ = "John Thorvald Wodder II"
 __author_email__ = "linesep@varonathe.org"
 __license__ = "MIT"