diff --git a/CHANGELOG b/CHANGELOG
index b05dabe..85f3b89 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-v0.4 (unreleased):
+v0.4 (released August 28, 2024):
 
 - Migrated to Python 3 (3.11+). Substantial code cleanup.
 - Migrated to pyproject.toml and pytest.
diff --git a/docs/conf.py b/docs/conf.py
index a851a99..4fc7cdb 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -49,7 +49,7 @@ copyright = "2009-2016 Ben Kurtovic"
 # The short X.Y version.
 version = "0.4"
 # The full version, including alpha/beta/rc tags.
-release = "0.4.dev0"
+release = "0.4"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/pyproject.toml b/pyproject.toml
index 623be4b..0365991 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "earwigbot"
-version = "0.4.dev0"
+version = "0.4"
 authors = [
   {name = "Ben Kurtovic", email = "ben@benkurtovic.com"},
 ]
diff --git a/src/earwigbot/__init__.py b/src/earwigbot/__init__.py
index 4a1dce1..e242599 100644
--- a/src/earwigbot/__init__.py
+++ b/src/earwigbot/__init__.py
@@ -40,7 +40,7 @@ __all__ = [
 __author__ = "Ben Kurtovic"
 __copyright__ = "Copyright (C) 2009-2024 Ben Kurtovic"
 __license__ = "MIT License"
-__version__ = "0.4.dev0"
+__version__ = "0.4"
 __email__ = "ben.kurtovic@gmail.com"
 __release__ = False