diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..ed9b9f7
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,17 @@
+# Changelog
+
+## [0.2.0] - 2026-04-15
+
+### Added
+- Add Solve-style controller `handle_info` fallback for non-Solve messages.
+- Allow controller `handle_info` arities from `/2` through `/5`, with access to state, dependencies, callbacks, and init params.
+- Document controller `handle_info` usage in the README and module docs.
+
+### Changed
+- Keep Solve internal messages reserved from controller-defined `handle_info` clauses.
+- Validate controller `handle_info` arity at compile time.
+
+## [0.1.0] - 2026-04-08
+
+### Added
+- Initial release.
diff --git a/mix.exs b/mix.exs
index e226f36..ff30813 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,7 +2,7 @@ defmodule Solve.MixProject do
   use Mix.Project
 
   @description "Declarative UI agnostic state management architecture"
-  @version "0.1.0"
+  @version "0.2.0"
   @source_url "https://github.com/emerge-elixir/solve"
 
   def project do
@@ -80,6 +80,7 @@ defmodule Solve.MixProject do
       },
       files: [
         "lib",
+        "CHANGELOG.md",
         "README.md",
         "ARCHITECTURE.md",
         "LICENSE",
@@ -94,10 +95,12 @@ defmodule Solve.MixProject do
       main: "readme",
       source_ref: "v#{@version}",
       extras: [
+        "CHANGELOG.md",
         "README.md",
         "ARCHITECTURE.md"
       ],
       groups_for_extras: [
+        Release: ["CHANGELOG.md"],
         Internals: ["ARCHITECTURE.md"]
       ],
       groups_for_modules: [