diff --git a/CHANGES.md b/CHANGES.md
index 9839cea..0867a30 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,6 @@
 ## Changes
 
-### 3.1.0 (unreleased)
+### 3.1.0 (2023-12-10)
 
 - Provide `directory` default setting [rnix]
 - Feature: Include other INI config files [jensens]
diff --git a/pyproject.toml b/pyproject.toml
index 104b03e..115046f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "mxdev"
 description = "Enable to work with Python projects containing lots of packages, of which you only want to develop some."
-version = "3.1.0.dev0"
+version = "3.1.0"
 keywords = ["pip", "vcs", "git", "development"]
 authors = [
   {name = "MX Stack Developers", email = "dev@bluedynamics.com" }