diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44df7a4..e5a3099 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,17 @@
 # Changelog
 
+### 0.4.0 (2024-01-15)
+
+- Change the 'precision' value used to distinguish between two contiguous bands.
+
+- Simplify some minor stuff in `trance_band_paths` function.
+
+
 ### 0.3.1 (2023-10-04)
 
 - Slightly improve performance of `ContourBuilder::contours` / `ContourBuilder::par_contours` methods.
 
+
 ### 0.3.0 (2023-03-20)
 
 - Add new `par_contours` method to `ContourBuilder` to generate contours in parallel (only available with the `parallel` feature flag).
diff --git a/Cargo.toml b/Cargo.toml
index 9dfd024..2b90319 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "contour-isobands"
-version = "0.3.1"
+version = "0.4.0"
 authors = ["Matthieu Viry <matthieu.viry@cnrs.fr>"]
 edition = "2021"
 license = "AGPL-3.0-or-later"