diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5207833..9736f8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+
+## 0.4.0
+
 ### Added
 
 - Added new command line option `--global_align` to both command line tasks
@@ -32,4 +35,4 @@ this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - edge case caused by indels when making VCF with `--global align`.
 
 
-[Unreleased]: https://github.com/iqbal-lab-org/varifier/compare/v0.3.1...HEAD
+[Unreleased]: https://github.com/iqbal-lab-org/varifier/compare/v0.4.0...HEAD
diff --git a/setup.py b/setup.py
index 367f867..d9e3081 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(
     name="varifier",
-    version="0.3.1",
+    version="0.4.0",
     description="varifier: variant call verification",
     packages=find_packages(),
     author="Martin Hunt",