diff --git a/CHANGELOG.md b/CHANGELOG.md
index e694489..0aa12a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
 ## [0.12.0] - 2024-12-04
 ### Changed
 - The minimum Java version required is now Java 17.
@@ -239,6 +241,7 @@ Provided by the plugin:
  with a `ZapVersions.xml` from an add-on.
 
 
+[Unreleased]: https://github.com/zaproxy/gradle-plugin-add-on/compare/v0.12.0...HEAD
 [0.12.0]: https://github.com/zaproxy/gradle-plugin-add-on/compare/v0.11.0...v0.12.0
 [0.11.0]: https://github.com/zaproxy/gradle-plugin-add-on/compare/v0.10.0...v0.11.0
 [0.10.0]: https://github.com/zaproxy/gradle-plugin-add-on/compare/v0.9.0...v0.10.0
diff --git a/build.gradle.kts b/build.gradle.kts
index 0d92924..1010e3e 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 }
 
 group = "org.zaproxy.gradle"
-version = "0.12.0"
+version = "0.13.0-SNAPSHOT"
 
 dependencies {
     implementation("commons-codec:commons-codec:1.17.1")