diff --git a/CHANGELOG.md b/CHANGELOG.md
index 93786cb..8f034b4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
-# Changelog for unreleased
+# Changelog for 0.4.0
 
-The following sections list the changes for unreleased.
+The following sections list the changes for 0.4.0.
 
 ## Summary
 
diff --git a/changelog/unreleased/structure-refactoring.md b/changelog/0.4.0_2020-04-23/structure-refactoring.md
similarity index 100%
rename from changelog/unreleased/structure-refactoring.md
rename to changelog/0.4.0_2020-04-23/structure-refactoring.md