diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99d565d..1773f04 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [v0.4.1] - 2022-08-10
+
+### Added
+
+- Added `:transport_opts` option to `Jeff.ACU.start_link` for passing options
+  to the underlying transport.
+
 ## [v0.4.0] - 2022-07-29
 
 ### Changed
diff --git a/mix.exs b/mix.exs
index 27ecadf..67a7589 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Jeff.MixProject do
   use Mix.Project
 
-  @version "0.4.0"
+  @version "0.4.1"
 
   def project do
     [