diff --git a/Cargo.toml b/Cargo.toml
index eb59f51..f333ffe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "routecore"
-version = "0.5.0"
+version = "0.5.1-dev"
 authors = ["NLnet Labs <routing-team@nlnetlabs.nl>"]
 categories = ["network-programming"]
 description = "A Library with Building Blocks for BGP Routing"
diff --git a/Changelog.md b/Changelog.md
index 1554efd..cd791b8 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,19 @@
+## Unreleased new version
+
+
+Breaking changes
+
+
+New
+
+
+Other changes
+
+
+Known limitations/issues
+
+
+
 ## 0.5.0
 
 Released 2024-11-20.