diff --git a/CHANGELOG.md b/CHANGELOG.md
index b779571..415e8e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,15 @@ 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).
 
+## [0.4.3](https://github.com/elixir-telemetry/telemetry/tree/v0.4.3)
+
+This release improves the `telemetry:span/3` function by adding the `telemetry_span_context` metadata
+to all span events. The new metadata enables correlating span events that belong to the same span.
+
+### Added
+
+- Added `telemetry_span_context` metadata to all events emitted by `telemetry:span/3`.
+
 ## [0.4.2](https://github.com/elixir-telemetry/telemetry/tree/v0.4.2)
 
 ### Added
diff --git a/doc/overview.edoc b/doc/overview.edoc
index 2a024a5..f704256 100644
--- a/doc/overview.edoc
+++ b/doc/overview.edoc
@@ -1,5 +1,5 @@
 @copyright 2018 Chris McCord and Erlang Solutions
-@version 0.4.2
+@version 0.4.3
 @title Telemetry
 @doc Telemetry is a dynamic dispatching library for metrics and instrumentations.
 It is lightweight, small and can be used in any Erlang or Elixir project.
diff --git a/rebar.config b/rebar.config
index 1d44ac7..5b48ca9 100644
--- a/rebar.config
+++ b/rebar.config
@@ -12,7 +12,7 @@
             {covertool, [{coverdata_files, ["ct.coverdata"]}]}
     ]},
     {docs, [{edoc_opts, [{preprocess, true},
-                         {title, "Telemetry v0.4.2"}]}
+                         {title, "Telemetry v0.4.3"}]}
     ]}
 ]}.