diff --git a/CHANGELOG.md b/CHANGELOG.md
index a3e3903..5ebaf30 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@ 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).
 
+## 3.4.0
+*  Add `logback13` plugin to support `Logback 1.3`
+
 ## 3.3.0
 * Remove Apache `commons-lang` classes from final logging extension jars
 
diff --git a/README.md b/README.md
index b729f84..e054990 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ We support:
 * [Apache Log4j 2.13.2 or higher](log4j2/README.md)
   * We strongly suggest that log4j 2.15.x or higher be used to avoid [CVE-2021-44228](https://nvd.nist.gov/vuln/detail/CVE-2021-44228)
 * [Apache Log4j 1.x](log4j1/README.md)
+* [Logback 1.3](logback13/README.md)
 * [Logback 1.2](logback/README.md)
 * [Logback 1.1](logback11/README.md)
 * [Dropwizard 1.3](dropwizard/README.md)
diff --git a/gradle.properties b/gradle.properties
index 67b24c9..3927e80 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-releaseVersion=3.4.0
+releaseVersion=3.5.0