diff --git a/CHANGELOG.md b/CHANGELOG.md
index 408d2cb..af35f76 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## master ##
+## 1.9.0 ##
   * Store mail location in `Mail::Message` object (thanks [Jonathan Chan](https://github.com/jonmchan))
   * Drop Ruby 2 support. Support only Ruby 3.0+
   * Remove `nkf` gem dependency.
diff --git a/letter_opener.gemspec b/letter_opener.gemspec
index a48546b..3ac8e4f 100644
--- a/letter_opener.gemspec
+++ b/letter_opener.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name        = "letter_opener"
-  s.version     = "1.8.1"
+  s.version     = "1.9.0"
   s.author      = "Ryan Bates"
   s.email       = "ryan@railscasts.com"
   s.homepage    = "https://github.com/ryanb/letter_opener"