diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4ee868e..1f4e23d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## [0.4.0] Unreleased
+## [0.4.0] 08/04/2021
 
 ### Changed
 * use enum for the davidson correction instead of str (#16)