diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ecc934..07dbbda 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 
 
+# Unreleased: 0.4.3
+
 
 # 0.4.2 (2024-09-09)
 
diff --git a/pyproject.toml b/pyproject.toml
index 4e87d4d..36747ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "dahuffman"
-version = "0.4.2"
+version = "0.4.3-alpha"
 authors = [
     { name = "Stefaan Lippens", email = "soxofaan@gmail.com" },
 ]