diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb28016..62ec05c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## v0.2.1
+
+* Improvements
+  * Move C build products under `_build`. This lets you switch targets with out
+    cleaning builds in between.
+
 ## v0.2.0
 
 * Added support for configuring NTP servers at runtime. Thanks to @ConnorRigby
diff --git a/mix.exs b/mix.exs
index 26c7ee1..fbec30a 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule Nerves.Time.MixProject do
   def project do
     [
       app: :nerves_time,
-      version: "0.2.0",
+      version: "0.2.1",
       elixir: "~> 1.6",
       start_permanent: Mix.env() == :prod,
       build_embedded: true,