diff --git a/ChangeLog.txt b/ChangeLog.txt
index b1a67c7..6506dd3 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -1,4 +1,4 @@
-4.0.0 (unreleased)
+4.0.0
 ------
 This release adds supports for types that can throw errors when reading or writing.