diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e3e412..68bb2a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ See [Conventional Commits](Https://conventionalcommits.org) for commit guideline
 
 <!-- changelog -->
 
+## [3.1.0](https://github.com/spandex-project/spandex/compare/3.0.3...3.1.0) (2021-10-23)
+
+* Encode logger metadata as string. by @aselder in https://github.com/spandex-project/spandex/pull/127
+* Set up sponsorship links by @GregMefford in https://github.com/spandex-project/spandex/pull/132
+* Guard clauses for trace and span macros by @GregMefford in https://github.com/spandex-project/spandex/pull/130
+* Misc doc changes by @kianmeng in https://github.com/spandex-project/spandex/pull/128
+
 ## [3.0.3](https://github.com/spandex-project/spandex/compare/3.0.2...3.0.3) (2020-11-10)
 
 
diff --git a/mix.exs b/mix.exs
index 968b6ea..fcf7c6b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,7 +2,7 @@ defmodule Spandex.Mixfile do
   use Mix.Project
 
   @source_url "https://github.com/spandex-project/spandex"
-  @version "3.0.3"
+  @version "3.1.0"
 
   def project do
     [