diff --git a/CHANGELOG.md b/CHANGELOG.md
index 30b1c5a..4dc06d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file.
 
-## [0.5.0] - 2023-04-26
+## [Unreleased]
 
 ### Added
 
diff --git a/lolafect/__version__.py b/lolafect/__version__.py
index 3d18726..6a9beea 100644
--- a/lolafect/__version__.py
+++ b/lolafect/__version__.py
@@ -1 +1 @@
-__version__ = "0.5.0"
+__version__ = "0.4.0"