diff --git a/CHANGELOG.md b/CHANGELOG.md
index a22822f4..c2c0b9d7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,13 @@
 # Savon changelog
 
 ## Unreleased
-* Ruby 3.0+ is required in the gemspec.
 * Add your PR changelog line here
 
+## 2.15.1 (2024-07-08)
+
+* Ruby 3.0+ is required in the gemspec.
+* Require httpi 4.x - older versions rely on `Rack::Utils::HeaderHash` which is removed in Rack 3.0.
+
 ## 2.15.0 (2024-02-10)
 
 * Drop support for ruby 2.7 and below. Added Ruby 3.2 and 3.3 to test matrix.
diff --git a/lib/savon/version.rb b/lib/savon/version.rb
index 43f45e78..e3e0093a 100644
--- a/lib/savon/version.rb
+++ b/lib/savon/version.rb
@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 module Savon
-  VERSION = '2.15.0'
+  VERSION = '2.15.1'
 end