diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8617cf..bca0c13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 3.4.3 (August 20th, 2021)
+
+OTHER:
+
+- re-release 3.4.2 to rebuild Docker image with security vulnerabilities fixes
+
 ## 3.4.2 (July 30, 2021)
 
 IMPROVEMENTS:
diff --git a/lib/dyndnsd/version.rb b/lib/dyndnsd/version.rb
index 03afcc5..713b06c 100644
--- a/lib/dyndnsd/version.rb
+++ b/lib/dyndnsd/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Dyndnsd
-  VERSION = '3.4.2'
+  VERSION = '3.4.3'
 end