diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e4d4f8ef3..e7eaf1f7eb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ Nokogiri follows [Semantic Versioning](https://semver.org/), please see the [REA
 
 ---
 
-## v1.18.1 / unreleased
+## v1.18.1 / 2024-12-29
 
 ### Fixed
 
diff --git a/lib/nokogiri/version/constant.rb b/lib/nokogiri/version/constant.rb
index 8a6fe62f17..b5422ea479 100644
--- a/lib/nokogiri/version/constant.rb
+++ b/lib/nokogiri/version/constant.rb
@@ -2,5 +2,5 @@
 
 module Nokogiri
   # The version of Nokogiri you are using
-  VERSION = "1.18.0"
+  VERSION = "1.18.1"
 end