diff --git a/CHANGES.md b/CHANGES.md
index 11fa5d0..dac8749 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 1.0a6 (unreleased)
+
+
+- Nothing changed yet.
+
+
 ## 1.0a5 (2024-06-07)
 
 - Export `OS` environment variable in `mxenv` domain to prevent warning on
diff --git a/pyproject.toml b/pyproject.toml
index 6f701eb..cf61c08 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "mxmake"
 description = "Generates a Python project-specific Makefile by using an extensible library of configurable Makefile snippets."
-version = "1.0a5"
+version = "1.0a6.dev0"
 keywords = ["development", "deployment", "make"]
 authors = [
   {name = "MX Stack Developers", email = "dev@bluedynamics.com" }