diff --git a/CHANGELOG.md b/CHANGELOG.md
index 713da10..b5d4612 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [1.20.0] - 2023-08-22
 
 ### Added
 
diff --git a/README.md b/README.md
index 6e47372..153f779 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ rebar.config
 ``` erlang
 {deps, [
     % [...]
-    {tls_certificate_check, "~> 1.19"}
+    {tls_certificate_check, "~> 1.20"}
 ]}.
 ```
 
@@ -71,7 +71,7 @@ mix.exs
   defp deps do
     [
       # [...]
-      {:tls_certificate_check, "~> 1.19"}
+      {:tls_certificate_check, "~> 1.20"}
     ]
   end
 ```