diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6782227..c651ba5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 2.1.1
+
+* [FIXED] Fix MultiJson deprecation warnings (encode/decode → dump/load)
+* [FIXED] Fix RSpec deprecation warnings across spec files
+* [FIXED] Add logger gem to development dependencies for Ruby 4.0 compatibility
+
 ## 2.1.0
 
 * [FIXED] Reset HTTP client connection after unknown error responses to prevent subsequent requests from failing.
diff --git a/lib/pusher/version.rb b/lib/pusher/version.rb
index c5d31df..016afc3 100644
--- a/lib/pusher/version.rb
+++ b/lib/pusher/version.rb
@@ -1,3 +1,3 @@
 module Pusher
-  VERSION = '2.1.0'
+  VERSION = '2.1.1'
 end