diff --git a/CHANGES.TXT b/CHANGES.TXT
index d6d85ae..01a1097 100644
--- a/CHANGES.TXT
+++ b/CHANGES.TXT
@@ -1,5 +1,7 @@
 Version   Changes
 --------  --------------------------------------------------------------------
+0.4.0     Added 'serde' support (thx to Roms1383).
+
 0.3.3     Added CI jobs for cargo check, test and clippy (thx to Roms1383).
 
 0.3.2     Updated ISO 4217 currency data.
diff --git a/Cargo.toml b/Cargo.toml
index 6cbe41d..65f5ce2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "moneta"
-version = "0.3.3"
+version = "0.4.0"
 edition = "2021"
 authors = ["Michael Amrhein <michael@adrhinum.de>"]
 description = "Currency-safe computations with money amounts."