diff --git a/mxl-base/CHANGELOG.md b/mxl-base/CHANGELOG.md
index deca7f2..c2a780e 100644
--- a/mxl-base/CHANGELOG.md
+++ b/mxl-base/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0](https://github.com/x-software-com/mxl-crates/compare/mxl-base-v0.3.4...mxl-base-v0.4.0) - 2025-12-15
+
+### Other
+
+- improved logging
+
 ## [0.3.4](https://github.com/x-software-com/mxl-crates/compare/mxl-base-v0.3.3...mxl-base-v0.3.4) - 2025-12-03
 
 ### Other
diff --git a/mxl-base/Cargo.toml b/mxl-base/Cargo.toml
index 29fe461..171b01e 100644
--- a/mxl-base/Cargo.toml
+++ b/mxl-base/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mxl-base"
-version = "0.3.4"
+version = "0.4.0"
 description = "This is a component of the X-Software MXL product line"
 readme = "README.md"
 license.workspace = true